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Geography / africa · Places

Africa

Africa is the world's second-largest continent by area and population, with tropical, arid and temperate zones and more than 50 sovereign states.

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Africa is Earth's second-largest continent by both area and population. It covers about 30 million square kilometres, spans the equator, and is bounded by the Mediterranean Sea, the Red Sea, the Indian Ocean and the Atlantic Ocean. Its 54 recognised sovereign states sit alongside dependent territories and island groups. The landmass contains the Sahara, the Congo Basin rainforest, vast savannas, the highlands of East Africa and the temperate southern tip. Its physical setting is shaped by plate tectonics, climate zones and large river systems such as the Nile, Congo and Niger.

Africa matters to the wider history of life and human societies. East Africa preserves much of the fossil record of human evolution, and the continent is where Homo sapiens first emerged. It hosted early states such as ancient Egypt, Kush and Aksum, long-distance trade networks across the Sahara and Indian Ocean, and the colonial conquest and independence movements of the modern era. Today Africa has the youngest population of any continent, rich mineral and energy resources, and high exposure to climate change and infectious disease.

This entry moves from the continent's definition and physical geography through climate, water and biodiversity to human prehistory and the successive historical periods. It then covers demography, languages and culture, economy, health, environment, and digital and scientific development. It closes with unresolved debates about data, classification and the historical record.

Name, definition and boundaries

Etymology of the name

The name is traced to the Romans, who applied it to a region of the North African coast before it referred to the whole landmass. After Rome destroyed Carthage in the Third Punic War, it set up a province there in 146 BCE, Roman administrators called it "Africa," and the term was used for the territory of modern Tunisia and its surroundings. The Latin phrase Africa terra meant "land of the Afri," a name for the people around Carthage. The origin of Afri remains uncertain. One proposal links it to the Phoenician afar, "dust"; another, from 1981, links it to the Berber ifri, "cave." Ancient writers also offered Greek and Latin word-play, such as the Greek aphrike (a land without cold) and the Latin aprica (sunny), but these are generally regarded as folk explanations. Some Afrocentric writers, notably Ivan Van Sertima, argued for an indigenous African origin, but this view is not the mainstream position among philologists. The Arabic name Ifriqiya, later applied to the area between eastern Algeria and western Libya, derives from the Roman provincial name. European cartographers of the fifteenth to seventeenth centuries extended the name to the entire continent.

Continent, region and UN subregions

Africa is usually counted as the second-largest continent. Continents are conventionally delimited by their continental shelves rather than by coastlines alone. Beyond this physical definition, Africa is also used as a political and geographic region. The African Union divides its member states into five regions, and the United Nations geoscheme uses a similar five-part division: Northern, Western, Middle (often called Central), Eastern and Southern Africa.

These subregions are not defined identically in every source. The UN geoscheme lists seven countries in Northern Africa, including Sudan and Western Sahara, while some popular references list only five, omitting both. Northern Africa is the largest subregion by land area. Eastern Africa contains the most countries, and it is also the most populous subregion. Southern Africa is the most contested: the UN geoscheme includes five states, but a physical-geography definition used in South Africa for natural sciences differs, and some atlases place Malawi, Zambia and Zimbabwe in Central Africa instead of the south or east. Because the physical definition cuts Mozambique in two, it is rarely used in political or economic contexts.

The Sahara and the scope of "North Africa"

The Sahara serves as the conventional dividing line on the continent. North Africa is usually defined as the area north of the desert, running along the Mediterranean coast, while the rest of the continent is grouped as sub-Saharan Africa. The Sahara covers much of North Africa and is the world's largest hot desert. Because the UN places four of its five subregions in sub-Saharan Africa, the term "sub-Saharan" is conventionally applied to nearly the whole continent except the north.

The Sahara line is a convention rather than a precise physical boundary, and the zone of transition, the Sahel, is not a sharp edge. Sudan is the clearest example of the resulting ambiguity: it is counted as Northern Africa in the UN scheme, although much of its population and territory lies south of the desert and it is often grouped with sub-Saharan countries in other systems. Such differences mean that statistics for "North Africa" or "sub-Saharan Africa" are not always comparable across sources.

Boundaries with Asia and the islands

Africa's only land connection to Asia is the Isthmus of Suez, a land bridge about 125 kilometres wide between the Mediterranean and the Red Sea. The Suez Canal, completed in 1869, cuts through this isthmus. Although the canal makes the crossing navigable, canals are generally not accepted as continent-defining boundaries in their own right; the continental division is taken to lie within the narrow natural land connection. The boundary therefore places the Sinai Peninsula in Asia while the Nile Valley lies in Africa. Egypt is thus a transcontinental state, though most of its population lives on the African side.

Other boundaries concern islands. Strictly speaking, an island cannot belong to a continent, but in practice major islands are assigned to continents by convention. Africa's Atlantic islands include Cape Verde and Saint Helena, which the UN geoscheme places in Western Africa. The Indian Ocean archipelagos, notably Madagascar, the Comoros, Mauritius and the Seychelles, are conventionally treated as African. The Mediterranean islands and their assignment to Africa, Europe or Asia form a separate question, and the Strait of Gibraltar marks the western edge of the Mediterranean separation between Africa and Europe.

Sources

Physical landforms and tectonic setting

Cratons and plateaus

Much of the interior is built on cratons, old and mechanically stable blocks of continental crust. In central Tanzania, the Tanzania Craton contains rocks over 3 billion years old, and the same block forms the highest part of the East African Plateau. Across the cratons as a whole, mean ground height is roughly 400 to 500 m, while southern Africa exceeds these elevations by more than 500 m and stands at over 1 km above sea level. Part of this elevation is linked to the African superswell, a region of unusual uplift covering more than 10 million km², where hot asthenosphere beneath the lithosphere is likely to be responsible for at least a part of the anomalously high elevation.

The edges of these plateaus are often marked by escarpments. A steep wall of cliffs, the Great Escarpment, separates the high southern and eastern interior from narrow coastal lowlands. Escarpments of this kind generally begin at rift-border faults, and headward erosion pushes them back at roughly 1 km per million years. The Drakensberg, on the border of South Africa and Lesotho, is the most spectacular stretch of this escarpment.

The East African Rift

The East African Rift System is the continent's most conspicuous active tectonic feature. It is a divergent plate boundary along which the African plate is in the process of splitting into two tectonic plates, called the Somali plate and the Nubian plate, at a rate of 8–9 mm (0.31–0.35 in) per year. Extension thins the crust and breaks it along faults, producing elongated troughs (grabens) about 100 km long and a few tens of kilometres wide, often filled with sediment or volcanic rock. The rift divides into two main branches, which separate near 5°N.

Volcanism is far heavier in the eastern branch, in Ethiopia and Kenya, than in the western branch, where eruptions cluster in a few provinces such as the Virunga and Kivu region and the Rungwe field. In the Afar region, satellite measurements have shown that four sills at depths of 9–28 km inflated simultaneously, lifting the ground across a zone roughly 100 km wide, which points to magma moving through the deep crust. One explanation for the broad doming of the Ethiopian Highlands is a large mantle plume beneath the rift, which is doming the lithosphere upwards, causing it to weaken.

Mountains and basins

The Atlas ranges in the northwest are a fold belt raised by compression at the northern margin of the African plate, while the Ethiopian Highlands are an elevated volcanic plateau flanking the rift. Between these margins lies the Congo Basin, a broad, low-relief sedimentary depression in central Africa that sits on the Congo Craton and drains toward the Congo River. Its gentle relief contrasts sharply with the escarpments and rift shoulders at the continent's edges.

Coastline and harbours

Africa's coastline is comparatively smooth. Its total length is only 30,500 km (19,000 mi); the length of the African coastline in proportion to its area is less than that of any other continent. Over long distances the African coast is unbroken by sizable inlets, and its major river mouths, except the Congo, are either deltaic or blocked by sand bars. Lowlands with sandy beaches dominate, and the continental shelf is correspondingly small, covering about 1.28 million km², compared with 9.38 million km² for Asia.

The shelf also varies in width. Off East Africa it is narrow and ranges in width from <2 km to ~80 km. The Sofala coast is an exception, where the continental shelf is wide in the region, reaching up to 140 km near Beira.

These features shaped port development. This paucity of approachable and protected natural harbors long hindered the development of the coastal zone and its hinterland. Along West Africa's sandy shores, ports such as Grand Bassam and Tabou relied on lighterage, with cargo moved between ship and shore through the surf, until deep-water harbours were built. Sheltered anchorages were rare, but where rivers flooded their valleys, the resulting rias provided good sites. Rias can be sited at Freetown in Sierra Leone and Mombasa.

Climate zones and their controls

Africa's climate pattern is set by its latitude, its position straddling the equator, the subtropical high-pressure belts, and its relief. The Köppen–Geiger scheme, a system devised in 1900 that remains the most widely used tool for comparing climates, divides the continent into five main groups. Tropical rainforest (Af) occupies the Congo Basin, the Guinean coast and the equatorial belt, with rainfall above 60 mm in every month. Tropical savanna (Aw) lies on both sides of the rainforest in West, East and Central Africa, and hot semi-arid (BSh) climates cover the Sahel and the Horn of Africa. Hot desert (BWh) covers the Sahara, the Namib and the Kalahari. Mediterranean (Cs) and humid temperate (Cf) climates are found at the northern and southern margins.The Köppen-Geiger climate classification divides Africa into five main zones. | Köppen zone | Where in Africa | Main characteristic | The arrangement is nearly symmetrical about the equator, so that the Sahel and the Kalahari-Namib margins mirror each other across the tropics.This mirror symmetry makes Africa unique among continents: nowhere else are climate zones arranged so cleanly.

Rainfall seasonality is driven mainly by the atmospheric circulation. The Intertropical Convergence Zone (ITCZ), where the trade winds of the two hemispheres meet, moves north and south with the sun. Over the continent its rain band follows the seasonal march of the sun, reaching its northernmost position in July–September and its southernmost in December–February. Near the equator, rainfall is distributed differently: equatorial Africa has two rainy seasons, centred on the equinoxes. The ITCZ paradigm itself has been challenged for equatorial Africa, since its movement does not fully account for the timing of rainfall there. The Sahara, by contrast, is dry throughout the year because it lies under the descending air of the subtropical high-pressure belt, where warm, dry air sinks. In the Sahel, a belt roughly between 5°N and 15°N, the rainy season from May to October is caused by the northward shift of the ITCZ, while the dry season follows the southward shift of the Saharan high. Rainfall is concentrated in a short period: the Sahel receives about 80% of its annual rainfall in July–September. Contrasts within the same latitude band are also large. Kano in northern Nigeria averages about half the rainfall of Lagos, because the ITCZ reaches it only once a year.

Interannual variability is strongly influenced by ocean-atmosphere modes. The El Niño–Southern Oscillation (ENSO) has its strongest signals in southern, eastern and far northern Africa, and its weakest in the Sahel. El Niño tends to bring drier conditions to southern Africa's summer rains, whereas La Niña is generally associated with wetter conditions there. In the Sahel, summer rainfall deficits have often accompanied El Niño years in the observational record. The Indian Ocean Dipole (IOD), an east–west contrast in sea-surface temperature, produces a rainfall pattern that partly operates independently of ENSO. Its effect is especially strong in September–November, when it can bring extra rain to East Africa. A warm phase of the dipole is associated with a wet East Africa and a dry southern Africa in the December–February period, provided the Pacific El Niño is also involved. Southern Africa's summer rainfall is also shaped by the Tropical Temperate Trough, a band of cloud and convergence stretching from southern Africa to the southwest Indian Ocean.

Altitude moderates the tropical latitudes considerably. Temperature falls with elevation, so highland areas near the equator can have temperate conditions, and snow is possible above about 4,000 m on peaks such as Kilimanjaro. The Ethiopian Highlands, Lesotho and the Drakensberg region fall in humid temperate categories, with evenly distributed rainfall and cooler temperatures attributable to altitude. The Mediterranean climate at the continent's two ends, with wet winters and dry summers, follows the same pattern of westerly-season rainfall. The Cape coast around Cape Town is a typical case, with a temperate climate and a warm summer.

Rivers, lakes and water resources

Africa's drainage is organised around a few very large systems. Most of them rise in wet equatorial or highland areas, cross arid or semi-arid belts, and reach the sea through drainage basins that differ sharply in size and discharge.

The Nile is the continent's longest river and runs roughly north from the Great Lakes region and the Ethiopian Highlands to the Mediterranean. Its length is reported differently by different sources: one reference gives 7,088 km, while many others put it at about 6,650 km, and the figure depends on how the source is defined. Its basin covers roughly 3.2 million km² in the broader estimate, and the basin spans 11 countries. The river has two main branches. The White Nile is the longer one, but the Blue Nile, which rises at Lake Tana in Ethiopia, contributes over twice the water volume of the White Nile. Downstream, the basin's arid character is extreme: in Egypt, precipitation falls to less than 20 mm per year, and most of the water resources of Sudan and Egypt originate outside their borders. This dependence on upstream inflow is the core of the Nile's political geography.

Other major rivers have different hydrological profiles. The Congo, which drains a basin of about 3.7 million km² centred on the equatorial rainforest, carries the second-largest discharge of any river in the world, after the Amazon. The Niger rises in the Guinea Highlands and flows in a broad arc through Mali, Niger, Benin and Nigeria to the Gulf of Guinea; in Mali its inland delta, around Mopti and Timbuktu, seasonally floods large wetlands used for fishing and grazing. The Zambezi, about 2,500 km long, flows from Zambia through Zimbabwe and Mozambique, passes Victoria Falls, and is regulated by the Kariba Dam (completed in 1959) and the Cahora Bassa Dam in Mozambique.

The Great Lakes of the East African Rift are among the largest freshwater bodies on Earth. Lake Victoria, the largest by area in Africa and shared by Kenya, Uganda and Tanzania, feeds the White Nile at Jinja. Lake Tanganyika, which lies in the rift valley, is both very deep and very long, and Lake Malawi (Nyasa) is shared by Malawi, Mozambique and Tanzania. Lake Chad, in the Sahel, is the most dramatic case of change. Its waters covered 25,000 km² in the 1960s, making it the sixth-largest lake in the world, but by the mid-1980s, the lake was just 2,000 km², less than a tenth of its former size. Because the lake is wide and shallow, changes in rainfall have a dramatic effect on its size. Researchers disagree on the lake's recent trajectory. Early accounts stress its shrinkage, and one source attributes about 50% of the decrease in the lake's size since the 1960s to human water use. A 2025 study, by contrast, reports that the volume of water in the lake has increased since its low point in the 1980s. The lake's basin is shared by Niger, Nigeria, Chad and Cameroon, and a long-standing proposal to divert water from the Congo River basin to Lake Chad has been discussed since the 1960s.

Groundwater is often more important than surface water in the Sahara. The Nubian Sandstone Aquifer System is the world's largest known fossil water aquifer system, and it underlies Chad, Egypt, Libya and Sudan, covering some two million square kilometres. Its water is ancient and non-renewable, so pumping can exceed recharge. Irrigation schemes illustrate both the promise and the risk: in southwestern Egypt, the East Oweinat project uses central pivot irrigation to mine the fossil water for extensive agricultural development, and in Libya the Great Man-made River project draws water for drinking and farming from the same system.

Management of shared waters depends on treaties and basin institutions, which are often weak. In 2013 the four Nubian countries formalized an agreement for joint management of the shared aquifer, and the Joint Authority Agreement created a Joint Authority for the Study and Development of the Nubian Sandstone Aquifer Waters, with its headquarters in Tripoli. Analysts nonetheless note that challenges include unclear policies, inadequate funding for monitoring and capacity-building, and weak institutions with overlapping responsibilities. The Nile is governed by the Nile Basin Initiative, founded in 1999, but earlier colonial-era treaties on Nile flows remain a source of dispute. The Nile Basin has over 257 million people, and the combination of uneven distribution of water resources among the countries, population pressure, urbanization and complex hydrology, coupled with climate change, makes sustainable sharing difficult. In southern Africa, the Zambezi Watercourse Commission and the regional Southern African Development Community protocol on shared watercourses serve a similar purpose.

Biomes and biodiversity

Biome zonation

Africa's biomes lie in broad bands that follow rainfall, temperature and latitude. In the north, the Mediterranean coast and the far south-west have winter-rain climates, while the Sahara occupies the centre of the continent as desert and xeric shrubland. Immediately south of the Sahara lies the Sahel belt, a transitional zone of semi-arid short grassland and vachellia savanna. The boundary between desert and Sahel is not fixed. Over the last few decades the boundary between the Sahara Desert and Sahel has shifted by hundreds of kilometres southward.

Further south, wetter climates support taller grass. Rainfall increases further south in the Sudanian Savanna, also known simply as the Sudan region, a belt of taller grasslands and savannas. Within this belt are large flooded grasslands, the Sudd wetland in South Sudan, and the Niger Inland Delta in Mali. Savanna is the largest biome of sub-Saharan Africa, a mosaic of grasslands, woodlands, bushlands, thickets, and semi-arid drylands that are maintained by fire and grazing. Around the equator, lowland broadleaf ecosystems with near-continuous canopies run as a broad band across equatorial Africa. This forest is wet and stable, and it holds very high species diversity.

In the highlands, cooler and wetter conditions support Afromontane vegetation. Afromontane forests are generally cooler and more humid than the surrounding lowlands. Afromontane forests occur as an archipelago of separated highland enclaves, including the Drakensberg range of southern Africa, the Cameroon Highlands, and the Cameroon Line volcanoes.

Centres of endemism

The Cape Floristic Region at the south-western tip of the continent is the best-known centre of plant endemism. Its area is reported inconsistently, from 78,555 square km to about 90 000 km2. It represents less than 0.5% of the area of Africa but is home to nearly 20% of the continent's flora. Some 69% of the estimated 9,000 plant species in the region are endemic. Fynbos, a fire-prone shrubland, covers most of the region. Fynbos plants depend on periodic burning, but fires in the wrong season or too frequently will eliminate species.

Other hotspots include the Maputaland-Pondoland-Albany region on the south-east coast. With nearly 8100 vascular plants species and 2000 endemic plant species, it is the second richest area in Africa in terms of plant diversity, after the Cape Floristic Region. Afromontane forest illustrates how concentrated diversity can be in small areas. Afromontane forest only covers 0.56 % of South Africa, yet it contains 5.35% of South Africa's plant species.

Megafauna and protected areas

Savanna megafauna, including elephants, giraffes, lions and zebras, are concentrated in the grasslands of East and southern Africa, many of them inside national parks and reserves. The forests of the Congo Basin shelter forest-dwelling species such as gorillas and forest elephants.

Elephant populations have declined sharply. African elephants are imperiled by poaching and habitat loss. The Sudano-Sahelian range shows the pattern clearly. A minimum of 7,745 elephants currently inhabit the entire region, representing a minimum decline of 50% from estimates four decades ago for these protected areas. Central African populations experienced much higher declines (−76%) than those in West Africa (−33%). Forest elephants are especially vulnerable; a survey in Côte d'Ivoire found them locally extinct in 84% of protected areas they surveyed.

Protection status affects outcomes. In one analysis, areas with IUCN protection I to IV (core and insular areas) have a significantly higher average annual growth rate (5.99%) than buffer areas (IUCN V, VI, or not reported) that allow human activities, which declined by 5.71%. Connectivity is also important, because core conservation areas contain only 48% of the region's elephants.

Pressures on biodiversity

Habitat loss is the broadest threat. Agriculture, settlement and infrastructure have fragmented many savanna and forest landscapes, and the elephants' range shrank from three million square miles in 1979 to just over one million square miles in 2007. Deforestation in the humid tropics, particularly in West and Central Africa, removes forest cover and isolates the species that depend on it. In South Africa, 44% of Afromontane forest vegetation has been transformed.

Invasive species compound these pressures. In the Cape, the impacts from invasive alien plant species and wild fires are the two greatest threats on the rare, endemic species that characterise this site. The bushmeat trade, the commercial hunting of wild animals for meat, depletes primates, antelope and other mammals in forests and savannas, sometimes emptying areas that still appear intact.

Human origins and prehistory

Africa holds the longest fossil record of the hominin lineage, but the record is patchy. Paleoanthropologists place the split between the hominin line and the ancestors of living African apes at about 10 to 8 million years ago, on the continent itself Hominins share a common ancestor with the extant African apes, and that ancestor lived in Africa some 10–8 mya. The best-documented early genus, Australopithecus, has been recovered from eastern, north-central and southern Africa, and its known span runs from about 4.4 to 1.4 million years ago Australopithecus is a genus of extinct hominins that are closely related to humans and known from fossils discovered in eastern, north-central, and southern Africa. They existed during the Pliocene and Pleistocene epochs, from 4.4 million to 1.4 million years ago. These hominins walked upright yet kept small brains, and their skeletons retained climbing adaptations such as long arms and curved fingers Like modern humans, they were bipedal. However, like apes, they had small brains.. Footprints at Laetoli in Tanzania, attributed to A. afarensis, show a stride comparable to that of habitually barefoot people Fossil evidence, such as the Laetoli footprints, indicates that Australopithecus afarensis walked upright in a manner similar to habitually barefoot people.

Preservation is a major constraint on the record. Suitable sediments are largely confined to the Rift Valley, South African limestone caves, and sedimentary deposits of the Chad Basin and the Djurab Desert Geological conditions favourable for the preservation and excavation of hominin fossils are uncommon—being largely restricted to the Great Rift Valley in eastern Africa, the limestone caves of South Africa, and sedimentary deposits of the Chad Basin and Djurab Desert. The South African record began with the Taung skull, recovered in 1924 and given its genus name by Raymond Dart the following year. Dating there is harder, because the dating of australopith sites in South Africa can only be approximated based on stratigraphy that uses time-diagonostic animal species for correlation with other argon-dated occurrences. New cosmogenic-nuclide dates for the Sterkfontein Member 4 deposits place them older than some earlier estimates and contemporaneous with A. afarensis in East Africa, which demonstrate the limitations of the widely accepted concept that Australopithecus africanus descended from Australopithecus afarensis. The contemporaneity of the two species now suggests that a more complex family tree prevailed early in the human evolutionary process. Eastern Africa also shows early overlap among lineages: Homo at 2.78 and 2.59 million years ago and Australopithecus at 2.63 million years ago, with as many as four hominin lineages living in eastern Africa between 3.0 and 2.5 million years ago.

Africa is also where the oldest known remains of Homo sapiens have been found, at Jebel Irhoud in Morocco. Dating to about 300,000 years old, the fossils push back the origin of Homo sapiens by at least 100,000 years. The age rests on thermoluminescence dating of burnt flints, which gave 315 ± 34 thousand years. Earlier interpretations were far less secure. A 2007 estimate of 160,000 years came from radiometric dating of a single tooth In 2007, researchers published a date of 160,000 years based on radiometric dating of a human tooth., and in the 1960s the material was attributed to African Neanderthals of about 40,000 years old researchers concluded in the 1960s that Jebel Irhoud's inhabitants were African Neanderthals who roamed the region 40,000 years ago.. The specimens combine modern conditions of the face and mandible combined with more primative features of the neurocranium.

The team behind the 2017 publications argues that the species did not arise in a single East African cradle. Its lead author, Jean-Jacques Hublin, has said that Homo sapiens spread across the entire African continent around 300,000 years ago. This view is contested. Paleoanthropologist John Hawks has suggested that the facial morphology may be retained from older forms rather than marking an early stage of modern humans, and other species such as Homo heidelbergensis and Homo naledi were also present at the time Maybe Jebel Irhoud was evolving into modern humans, but another possibility is that it is retaining facial morphology from an H. Other human species were on the scene back then, too, including Homo heidelbergensis and Homo naledi. Current fossil evidence points to an African origin for Homo sapiens from a group called either H. heidelbergensis or H. rhodesiensis, but the exact place and time of emergence of H. sapiens remain obscure because the fossil record is scarce and the chronological age of many key specimens remains uncertain.

Stone tools provide the earliest cultural evidence. Oldowan assemblages, named after Olduvai Gorge in Tanzania, are simply the oldest recognisable tools which have been preserved in the archaeological record. Estimates of their start vary with the source, from about 2.5 to 2.9 million years ago The Oldowan, dated between 2.5 and 2.9 Mya. The oldest sites are at Gona in Ethiopia Oldowan artifacts have been recovered from several localities in eastern, central, and southern Africa, the oldest of which is a site at Gona, Ethiopia.. The typical Oldowan tool is a chopper, a core with flakes removed to produce a sharp working edge Choppers are stone cores with flakes removed from part of the surface, creating a sharpened edge that was used for cutting, chopping, and scraping. The Oldowan persisted alongside the Acheulean, the next major industry, which By about 1.76 million years ago, early humans began to make Acheulean handaxes and other large cutting tools. Acheulean bifaces were shaped with softer hammers into symmetrical forms, and the industry lasted for well over a million years Not only are the Acheulean tools found over the largest area, but it is also the longest-running industry, lasting for over a million years.. Its end date is also disputed, with estimates ranging from about 250,000 to 154,000 years ago. From about 1.5 million years ago, Homo erectus carried the Acheulean beyond Africa Later, from about 1.5 million years ago, it was carried to Europe, Asia and the Middle East by Homo erectus.

The Middle Stone Age, which spanned the time between roughly 300,000 and 40,000 years ago, marks a further change, with the pace of innovation in stone technology began to accelerate by about 200,000 years ago. The Jebel Irhoud artifacts resemble those from deposits of similar age in East Africa and in southern Africa, and Hublin has suggested that the spread of this technology across the continent around 300,000 years ago may reflect the spread of the species itself Around 300,000 years ago we see the spread of the first Middle Stone Age stone technology all over Africa. It might be a proxy for the spread of this species.

The later movement of modern humans out of Africa, usually dated to roughly 70,000 to 60,000 years ago, is best understood against this background of long-standing continental populations. Living African populations carry more genetic variation than populations elsewhere, a pattern that geneticists attribute to the long history and internal structure of African populations, while the populations in other continents descend from subsets of African groups. The Jebel Irhoud evidence implies that our ancestors left the "cradle of mankind" in East Africa far earlier than previously thought, spreading across the continent.

Ancient states and civilizations

Ancient Egypt developed along the lower Nile from the late fourth millennium BCE. Annual floods deposited fertile silt on the floodplain, supporting surplus grain and a centralised state. Upper and Lower Egypt were unified around 3100 BCE, and the Old Kingdom then built monumental tombs, including the pyramids at Giza. Hieroglyphic writing appeared by about 3200 BCE and was used on stone and on papyrus. Egypt's relations with Nubia to the south were continuous. Middle Kingdom rulers built fortresses along the Second Cataract, and New Kingdom pharaohs such as Thutmose I and Thutmose III extended direct control over Nubian territory, which was administered by an official known as the King's Son of Kush.

South of Egypt, the Kingdom of Kush grew from earlier Nubian centres such as Kerma and later used Napata and then Meroë as its capitals. In the eighth century BCE, Kushite kings from Napata conquered Egypt and formed its 25th Dynasty. Assyrian invasions drove them out of Egypt in the mid-seventh century BCE, but Kush continued as an independent state. From around the third century BCE, Meroë became the political and economic centre. Its cemeteries and extensive iron-smelting sites, marked by large slag heaps, are the basis for claims about Meroitic ironworking. Scholars still debate how far this industry was independently developed and how large its output was for export. The Meroitic script, which exists in cursive and monumental forms, remains only partly understood. Meroë declined in the fourth century CE, and the Aksumite king Ezana campaigned against it around 350 CE.

Carthage was a Phoenician colony founded on the coast of what is now Tunisia. Its traditional foundation date is 814 BCE, and its settlers came from Tyre. Carthage grew into a commercial power that controlled a network of trading posts along the North African coast, in Sicily, Sardinia and southern Iberia. Its rivalry with Rome led to the Punic Wars between 264 and 146 BCE. In 146 BCE Rome destroyed the city, and it established the province of Africa on its territory. Roman rule then made the region one of the empire's principal sources of grain and olive oil, and it supported prosperous cities such as Leptis Magna, Timgad and Volubilis. Latin became the administrative language, and Christianity spread through these towns during the later Roman period.

The Aksumite kingdom flourished in the northern Ethiopian and Eritrean highlands from roughly the first to the seventh century CE. Its port of Adulis on the Red Sea linked it to Roman Egypt, Arabia, India and the African interior, and it exported ivory, tortoiseshell and other goods in exchange for textiles, metals and wine. Aksum minted its own coinage in gold, silver and bronze, beginning around the third century CE. The earliest issues used Greek legends, and later issues used the Ge'ez language. Its rulers also erected monumental stelae at Aksum. Around the 330s CE, King Ezana adopted Christianity, which made Aksum one of the earliest kingdoms to adopt the religion as a state faith. Later coins reflect this change through Christian symbols, and the kingdom's Christian tradition persisted in the Ethiopian highlands for centuries.

Medieval kingdoms and long-distance trade

Trans-Saharan trade and the western Sudanic empires

From the seventh century, growing demand for gold in Mediterranean economies drew Saharan commerce into a much larger system. Salt, mined at Taghaza and Awlil on the desert's southern edge, moved north, and gold moved south and then north again. Berber traders carried the salt, and by the eighth and ninth centuries Arab merchants in towns such as Sijilmasa in southern Morocco were buying gold that had passed through West African hands. The Soninke kingdom of Ghana, centred on Kumbi-Saleh, grew rich by taxing this traffic. Accounts describe a levy on goods entering and leaving the state, with salt often exchanged for gold weight for weight. Ghana's power faded as trade routes shifted eastward, and Mali took over. By the fourteenth century Mali controlled the commercial towns of Timbuktu and Djenné, and under Mansa Musa its wealth became legendary. Songhai then dominated the trade from Gao, extending its control over the middle Niger. Moroccan forces invaded in 1591, but the trade continued to be shaped by Saharan and Sahel rulers until European ships began to trade directly on the Atlantic coast in the late fifteenth century. Some dates for the rise of Ghana vary by several centuries across sources, so the chronology above should be treated as approximate.

Swahili city-states and the Indian Ocean

On the East African coast, Swahili culture emerged from the mixing of Bantu-speaking communities with Arab and Persian traders, with early city-states appearing around the eighth century. Towns such as Kilwa, Mombasa, Malindi, Lamu, Pate, Gedi, Zanzibar and Mogadishu were independent sultanates that shared a language and an Islamic religious identity but no overarching political structure. Their prosperity depended on the monsoon winds, which carried dhows between the coast, southern Arabia, the Persian Gulf, India and southeast Asia. Coastal merchants acted as middlemen, exporting gold, ivory, timber, mangrove poles and enslaved people from the interior, and importing Chinese porcelain, glass, silk, cotton cloth and spices. Kilwa was among the most important of these centres, and its stone ruins include a large mosque and a palace described as the largest stone building in Africa south of the Sahara at the time. The Swahili towns were often built with coral stone, which is why they are sometimes called "stone towns." Their commercial networks began to decline after Portuguese ships arrived in the late 1490s and the Portuguese attacked and occupied several coastal cities in the early sixteenth century.

Islam, scholarship and the book trade

Trade carried Islam deep into West Africa, and by the fourteenth to sixteenth centuries Timbuktu had become the best-known centre of Islamic learning in the western Sudan. The Sankore mosque, built of earth and timber in the Sudano-Sahelian style, was its main site of teaching. Sankore was less an institution in the modern sense than a network of scholars who taught in mosque courtyards and private homes, offering instruction in jurisprudence, theology, Arabic grammar, astronomy and mathematics. Timbuktu's libraries held large numbers of manuscripts, many of them copied and traded across the Sahara, and families of scholars passed these collections down over generations. Learning also linked West Africa with North Africa and the wider Islamic world, and Timbuktu's scholars corresponded with and were visited by scholars from Egypt, Morocco and elsewhere. Estimates of student numbers and of the total number of manuscripts vary widely, so specific figures should be treated with caution.

Southern African states and the Christian kingdom of Ethiopia

South of the Limpopo, the stone-walled capital of Great Zimbabwe flourished from about 1100 to about 1550 and controlled much of the gold trade of the plateau. Its goods reached the coast through ports such as Sofala, which linked the interior to Indian Ocean commerce and gave Kilwa a share of the gold trade. After Great Zimbabwe declined, the Mutapa state arose to the north and continued to trade with the coast. In the Horn of Africa, the Christian tradition of the Ethiopian highlands persisted after the decline of Aksum. The Zagwe dynasty, which ruled from the twelfth to the thirteenth century, is associated with the rock-hewn churches at Lalibela, and the later Solomonic dynasty claimed descent from the Aksumite line. Ethiopia's Christian kingdom thus maintained contact with Egypt and the Red Sea trade while remaining distinct from the Islamic states of the surrounding region.

Atlantic and Indian Ocean slave trades

Between the sixteenth and the early twentieth century, several large systems moved enslaved Africans out of the continent. Historians commonly group the trans-Saharan, Red Sea and Indian Ocean routes under labels such as the "Islamic" or "Arab" slave trade, which covers the movement of people from sub-Saharan Africa into the Muslim world. The Indian Ocean slave trade and the trans-Saharan slave trade were long-running networks, whereas the transatlantic trade was a concentrated, ship-based system that linked the African coast with the Americas. Because the four routes differed in their merchants, goods, ships and labour regimes, figures for one route cannot simply be added to another without accounting for overlap and for different kinds of evidence.

Scale and methods of estimation

Estimates for the transatlantic trade are the most precise. The Trans-Atlantic Slave Trade Database, based on roughly 36,000 voyages, concluded that slaving vessels embarked about 12.5 million captives in Africa over 366 years and landed 10.7 million in the New World. The database's estimates derive from ship manifests, port-of-entry records and reconstructed voyages. Missing data are handled by statistical imputation; a naive estimate that ignores the year of each voyage produces an over-estimate of the total number of embarking slaves. Destinations were highly uneven: Brazil received roughly 4.8 million, the Caribbean and European colonies there about 4 million, Spanish Central America around 1.3 million, and just 388,747—less than 4 percent of the total—came to North America. Earlier work had far wider ranges. Philip Curtin's 1969 census produced a figure of 9,566,000 African slaves imported to the Americas, while prior to Curtin's research, estimates of the number of individuals brought from Africa as slaves ranged from 3.5 million to numbers as high as 100 million individuals. The Middle Passage itself is estimated to have killed more than 1.8 million people.

Estimates for the other routes rest on thinner evidence. Scholars Joseph E. Inikori and others have noted that records are fragmentary; the leading recent estimates differ. One calculation holds that about 5 million people were trafficked from Sub-Saharan Africa during the period from the 16th to the 19th century, and about two-thirds of the total were trafficked on the Trans-Saharan route. Another, by N'Diaye and Pétré-Grenouilleau, puts the total transported from the 7th century until 1920 from East Africa at 8 million, with a further 9 million people enslaved and transported via the Sahara in the same wider frame. For the trans-Saharan route alone, Paul Lovejoy's estimate of around 6 million black slaves transported across the Sahara between 650 AD and 1500 AD illustrates how medieval totals are built on sparse sources. These figures diverge sharply, and much of the disagreement comes from how scholars treat the Red Sea and Indian Ocean routes, where records are scarce and shipping was often mixed with other cargo.

Routes and labour

The transatlantic system was organised around large cargo ships and plantation labour in the Americas. The Red Sea trade was different: enslaved people were most often shipped across the Red Sea on regular sailing boats carrying a variety of other commodities. In the nineteenth century, a large majority of enslaved people exported through the Red Sea were in their teens, and the sex ratio heavily favored females. Their work ranged across "luxury" slaves (eunuchs and concubines) to domestic servants to labor-intensive enterprises such as pearl divers, masons, laborers in ports, and workers on agricultural plantations.

On the Indian Ocean side, the trade fed a servile workforce for the clove and coconut plantations developed along the east coast of Africa by the Sultanate of Zanzibar as from the 1840s. Traders also supplied labour for date plantations and irrigation works on the Arabian peninsula, as well as fleets involved in fishing for pearls in the Persian Gulf and the Red Sea. Vessels were small: an average of 25 could be counted on board the dhows sailing along the coasts of East Africa in the 1860s and 1870s. Historians estimate that from the late 1850s until 1873, about 15,000 to 20,000 Africans were captured on the continent each year and taken to Zanzibar for sale.

Demographic, economic and social consequences

The loss of population was concentrated in regions close to the coast and to the caravan routes, and it affected demographic estimates for the continent. Because slaving slowed population growth, models that assume steady growth tend to underestimate earlier populations unless the drain is explicitly included. In East Africa, slavery was closely tied to the economy: during the 19th century, the rise of large-scale clove and coconut plantations under Omani Arab rule led to a significant expansion of the slave system. By some estimates, enslaved people constituted up to two-thirds of the archipelago's population at its peak. Ports such as Kilwa and Bagamoyo became centres of exchange, and the slave markets left a physical legacy; in Zanzibar's Stone Town, the marks of slave markets and holding chambers remain visible. The Atlantic trade, by contrast, was more racialised and plantation-based, and its economic effects were tied to the rise of sugar and other plantation commodities in the Americas, while the Indian Ocean labour regimes were more varied, including domestic and military roles.

Abolition and suppression

Britain's anti-slavery naval patrols in the Atlantic, beginning in 1807, reshaped the trade by forcing traders to shift to other sources and routes. Captured ships were often taken to Sierra Leone and St Helena, where their captives were landed. Suppression in the Indian Ocean proved far harder. Treaties in 1822, 1839, and 1845 (effective in 1847) were difficult to enforce, but they did result in lower prices. The decisive change came in 1873. In 1873, when the British were negotiating the treaty that would ban all shipments of slaves by sea, thereby ending mainland exports to Zanzibar, Sultan Barghash pleaded for more time, and he eventually agreed under pressure. Even so, in 1876, as part of another treaty, Barghash issued a proclamation making it illegal to organize slave caravans, but raiding continued. Slavery on Zanzibar itself lasted until 1909. The trans-Saharan and Ottoman-linked trades persisted into the twentieth century, with Libya as a principal route under Ottoman rule that lasted from 1551 to 1912.

Historiography

Scholarship on the trade has shifted from counting to explaining. Curtin's census and the later voyage database moved debate from broad guesses to shipping-based reconstruction, while questions about African agency, the role of African middlemen, and the responsibilities of Arab, Berber and European traders remain contested. Historians also note that the term Arab when used in historical documents often represented an ethnic term, as many of the "Arab" slave traders were physically indistinguishable from the "Africans" whom they enslaved and sold. The Indian Ocean and Red Sea routes have received less systematic study than the Atlantic, and the uncertainty in their totals remains one of the field's main open problems.

Colonial conquest and rule

The formal partition of Africa followed a rapid burst of European expansion in the 1880s, often called the Scramble for Africa. The Berlin Conference, convened by Otto von Bismarck and held from November 1884 to February 1885, did not draw the continent's borders in one act. Its General Act set rules for trade and navigation on the Congo and Niger rivers and recognised "effective occupation" as the test of a coastal claim. Because this rule rewarded visible administration, rival powers pushed inland with military posts, treaties signed with local rulers and expeditions. No African rulers were invited. By the early twentieth century, Ethiopia and Liberia were the only fully independent states, and Morocco had been divided into French and Spanish protectorates by 1912.

The new borders often ignored the political, linguistic and ecological arrangements that had existed before. Colonial lines split peoples such as the Ewe between the Gold Coast and Togoland, the Somali between several territories, and the Maasai between British and German spheres. Other lines grouped rival polities within one administrative unit. The Congo was treated as the personal possession of Leopold II of Belgium, and the Congo Free State's extraction of rubber, which used forced labour and violence, caused heavy loss of life before Belgium took over the territory in 1908.

Colonial governments used two main systems of control. Direct rule, favoured by France and Portugal, placed colonial officials at the head of a centralised hierarchy and claimed to assimilate a small educated elite. Indirect rule, associated with Frederick Lugard in northern Nigeria, governed through chiefs and courts that the colonial state recognised and reshaped. This system often froze "customary" law and invented authorities that had little precedent. In settler colonies, European migrants acquired land and political rights. In Algeria, three departments were attached to France from 1848, while the Muslim majority was subject to a separate code of penal rules. In Kenya, land in the highlands was reserved for Europeans from 1915. In Southern Rhodesia, the British South Africa Company's charter of 1889 gave way to settler self-government in 1923. The Union of South Africa, formed in 1910, passed the Natives Land Act of 1913, which confined most African land ownership to reserves.

Colonial economies were reorganised around exports and extraction. Taxes payable in cash, such as hut and head taxes, pushed people into wage work or cash cropping, and railways were built to carry groundnuts, cocoa, cotton and minerals to ports. The discovery of gold on the Witwatersrand in 1886 is the clearest case. Under the gold standard, the official price of gold was fixed, so mine owners could not pass rising costs on to buyers and needed large numbers of cheap unskilled workers. The conquest of the Pedi and Zulu kingdoms supplied some of this labour, and migrants came from Mozambique, Lesotho and Swaziland. Mining houses came to control the industry by the mid-1890s, and their labour regimes used compounds, recruitment agencies and segregated wages, with white miners earning more than ten times the pay of Black miners. The resulting city of Johannesburg grew rapidly, and disputes over the political rights of foreign mining workers contributed to the Second Boer War of 1899–1902.

Resistance was widespread but mostly defeated by superior firepower and alliances with local rivals. Abd al-Qadir fought the French in Algeria until 1847. The Maji Maji rising (1905–07) in German East Africa and the German campaign against the Herero and Nama (1904–08) in South West Africa were both suppressed with great brutality. The Battle of Adwa, fought on 1 March 1896, was the most notable African military victory of the period. The conflict began with a dispute over the Treaty of Wuchale (1889), in which Italy read the Amharic and Italian texts differently and sought a protectorate. Menelik II mobilised an army estimated at 73,000 to over 100,000 men, many armed with rifles imported from France and Russia, while the Italian force under Oreste Baratieri numbered roughly 14,500 to 20,000. The Italian army was divided and badly informed about the terrain, and it suffered about 7,000 killed and 3,000 taken prisoner. Italy was forced to recognise Ethiopian independence, a result that became a powerful symbol across the continent, although Italy later occupied Ethiopia from 1936 to 1941.

Decolonization and Pan-Africanism

Ghana was the first sub-Saharan colony to end European rule. Gaining independence from Britain on 6 March 1957, it was led by Kwame Nkrumah, whose Convention People's Party had won a large share of seats in the Gold Coast's 1951 elections and had campaigned through strikes and other non-violent action. Nkrumah argued that national independence was hollow unless it was tied to the liberation of the whole continent, and this view shaped the diplomacy of the following decade. Ghana's example was quickly followed. French territories in West and Equatorial Africa negotiated their transfers of power in 1958–60, and 1960 became known as the "Year of Africa", when more than a dozen states became independent. The Belgian Congo became independent on 30 June 1960, and the violent crisis that followed showed how thinly prepared some colonies had been for self-government. By about 1960 the peak of formal decolonization had passed for most of the continent, but several territories remained under settler or Portuguese rule.

Independence in much of the continent was reached through negotiation, but in several colonies it required prolonged armed struggle. In Algeria the National Liberation Front (FLN) fought France from 1954 until the Évian accords of 1962, and the war caused heavy casualties on both sides, although estimates of the Algerian death toll vary widely. In Kenya, the Mau Mau uprising against British rule, concentrated among the Kikuyu, was suppressed during the Emergency of 1952–60, and the country gained independence in December 1963. Portugal, which held Angola, Mozambique and Guinea-Bissau, resisted calls for decolonization. Armed campaigns began in Angola in 1961 and in Mozambique in 1964, when FRELIMO started its guerrilla war. The Portuguese regime collapsed in the 1974 Carnation Revolution, and Angola and Mozambique became independent in 1975. Independence in these countries was followed by civil wars, most notably in Angola, where rival movements continued fighting for decades.

Pan-Africanism, a set of ideas about the shared interests and common future of African peoples and the diaspora, provided the intellectual basis for these movements. It developed through a series of congresses in the early twentieth century and gained institutional form after 1945. Its leaders disagreed sharply over strategy. Some, including Nkrumah and Sékou Touré, favoured rapid political union, while others, such as the leaders of Monrovia-aligned states, preferred gradual cooperation that respected existing borders. These differences were resolved, at least provisionally, at the Addis Ababa conference of May 1963. On 25 May that year, 32 independent states signed the charter of the Organisation of African Unity (OAU), which entered into force in September. Its stated aims included promoting unity among African states, defending their sovereignty and territorial integrity, and eradicating colonialism on the continent. Its acceptance of inherited colonial borders was a deliberate choice to avoid conflict between newly independent states.

The OAU's agenda was dominated by the struggle against white minority rule. South Africa, under apartheid, was excluded from the organisation, and the OAU supported liberation movements and worked to isolate the government in Pretoria. Namibia gained independence in 1990, and the first democratic elections in South Africa in April 1994 ended apartheid and brought Nelson Mandela to the presidency. The OAU had by then lost much of its original purpose, and African leaders had argued since the late 1990s that its focus on liberation needed to shift toward economic integration. The Sirte Declaration of September 1999 called for a new continental body, and the Constitutive Act was adopted at Lomé in 2000. On 9 July 2002 the African Union was launched in Durban, South Africa, and the OAU was formally dissolved on the same day. The transition marked a shift in the continent's political agenda from ending colonial rule to pursuing unity, governance and development.

Governance and regional integration

Most states that gained independence in the 1950s and 1960s inherited centralised executives, and many quickly restricted rival parties. One-party systems became common in the following decades, and military officers seized power in numerous countries. Several states, some of them large, then endured prolonged civil wars that often drew in neighbouring countries. Governance has been shaped by these experiences ever since, and the strength of democratic institutions still varies widely.

Coups, term limits and constitutional change

Military takeovers have recurred into the twenty-first century. Since 2020, there were eleven instances of coups in nine African states. Soldiers took control in Antananarivo, Madagascar, on 14 October 2025. A later takeover in Guinea-Bissau, in late November 2025, was carried out by the incumbent's side to block an electoral defeat, according to one analysis of the period.Following the coup in Madagascar in October, West Africa experienced, in November and December respectively, a coup in Guinea-Bissau orchestrated by the incumbent to prevent electoral defeat and an attempted coup in Benin.

A second route to prolonged rule is the manipulation of the constitution itself. Leaders of 14 African countries have held onto power for more than two terms after evading term limits. This trend has reversed an earlier period of relative adherence between 2000 and 2015. Five of the eight countries that have suffered coups since 2015 had leaders who evaded term limits—Chad, Gabon, Guinea, Sudan, and Zimbabwe. The Central African Republic offers a clear case. Its 2023 referendum removed presidential term limits and lengthened terms from five to seven years. The main opposition boycotted the vote, which still passed with about 95 per cent support, and in 2025 the incumbent was re-elected with more than seventy per cent of the vote amid allegations of repression.

The African Union's normative framework rests on the 2000 Declaration on unconstitutional changes of government and the 2007 African Charter on Democracy, Elections and Governance. In practice, the AU has been more consistent against coups than against constitutional manipulation. In one dataset, the AU enforced the sanctions in 17 out of 20 coup cases, but it has not directly responded to instances of constitutional manipulation in cases ranging from Burundi to Zimbabwe. Researchers describe the latter as "constitutional coups." Within the regions, ECOWAS has a protocol that limits changes to constitutions or electoral laws in the six months before an election, but critics note that changes made earlier escape this restriction.

Regional economic communities

The AU recognises eight regional economic communities (RECs) as the building blocks of continental integration, namely the Arab Maghreb Union, COMESA, CEN-SAD, the East African Community (EAC), ECCAS, ECOWAS, IGAD and SADC. Their memberships overlap considerably. Kenya and Uganda belong to both the EAC and COMESA, and Tanzania left COMESA for SADC in 2001. Their capacities also differ, and ECOWAS, SADC and EAC are the most developed among them. The EAC and ECOWAS have roots in economic and infrastructure links formed during the colonial period.

African Continental Free Trade Area

The African Continental Free Trade Area (AfCFTA) was agreed in 2018, when 44 members of the African Union agreed to join a continental free-trade zone. It entered into force on May 30, 2019, after 24 Member States deposited their Instruments of Ratification. Trading began on 1 January 2021, after a six month delay as a result of the impact of Covid-19. Its Secretariat is based in Accra, Ghana. Negotiations on rules of origin were reported as 88.3% complete by March 2023, and in October 2022 a Guided Trade Initiative allowed limited trade between a group of countries that had met minimum requirements.

Assessments of its effects differ by date and method. An early analysis observed that few goods had changed hands under the agreement, and it pointed to unratified commitments, unresolved customs documentation, weak transport infrastructure and remaining non-tariff barriers. A later review by trade unions, covering 2021–2025, reported more intra-continental trade, some new investment and growth in sectors such as automotive manufacturing, pharmaceuticals and digital services, although progress varies. The agreement covers 54 countries, a population of 1.3 billion, and a combined GDP of US$3.4 trillion.

Population, urbanisation and demography

Africa is the second most populous continent after Asia. Figures from the United Nations World Population Prospects 2024 revision (medium variant) put the population at about 1.515 billion (2024 estimate), and roughly 1.58 billion in 2026. Totals differ across compilations, partly because census coverage is uneven and national statistics offices revise their estimates.

Growth has been rapid. The population first surpassed one billion in 2009, and the continent is widely described as the fastest-growing in the world. The continent's fertility rate stood at 3.89 births per woman in 2026, which is well above the global average. UN projections point to nearly 2.5 billion by 2050 and 3.8 billion by 2100, so Africa's share of world population is expected to rise sharply over the century.

The continent's age structure is the youngest of any major region. With a median age of 19.7 in 2020, Africa was already the youngest continent, while Europe, the oldest continent, had a median age of 42.5. As of 2024, around 40 percent of the population in Sub-Saharan Africa was aged 15 years and younger, compared to a global average of 25 percent. Age structures differ widely between countries: Niger and Uganda have the lowest median age in Africa, at 15.1 and 16.1 years, respectively. This youth bulge has direct consequences for schooling and employment. Around 60% of Africa's population is younger than 25 years, so the expansion of education systems and the creation of jobs for entrants to the labour market are central policy problems. The UN Economic Commission for Africa has framed this as a demographic window that can only be turned into growth with sustained effort (a UNECA commentary on the continent's population crossing 1.5 billion). Whether that window produces a demographic dividend depends on poverty reduction, health gains and job creation, all of which vary strongly across countries.

Population is concentrated in a small number of large states. Nigeria is the most populous African country, with 233 million inhabitants as of 2024. Ethiopia follows with 127 million, then Egypt with 114.5 million. The Democratic Republic of the Congo ranks fourth; estimates for it range from 102 million to about 112.8 million for 2025, and Tanzania is close behind. Projections suggest the concentration will persist: Nigeria is projected to overtake the United States to become the world's third most populous country before 2050. Nigeria's fertility rate remains one of the highest in Africa at 5.3 births per woman, and more than half of global population growth this century is projected to come from just six countries, five of which are in Africa.

Urbanisation is advancing alongside this growth, though unevenly. 45.6% of the population is urban, which amounts to 722 million people in 2026. National patterns vary greatly: Nigeria's urban population reached 56.3% in 2024, while more than three-quarters of Ethiopia's 127 million people live in rural communities. In Egypt, a large portion of the population resides in Cairo and cities along the River Nile, with 43% of the population living in urban areas. Urban growth is most visible in the largest cities. Lagos alone holds over 15 million residents, and Cairo, Kinshasa, and Lagos are the only African cities in the global top 20. Johannesburg is a large but smaller centre: the Wikipedia urban-areas ranking gives 4,772,846 for 2022 in its city-level entry, with other figures for the wider urban area, so the reported size depends heavily on how city boundaries are defined.

Migration is an important but smaller component of population change than natural increase. Estimates of net migration show modest net outflows in recent years, at about 0.44 million in 2026 and about 0.64 million in 2024. Internal movement from rural areas to urban centres, cross-border labour movement and refugee flows, together with diaspora ties to Europe and the Gulf, shape the distribution of people more than these net totals suggest. Rapid city growth places heavy demands on infrastructure, housing and public services, particularly where urban populations expand faster than the systems that serve them.

Languages, religion and cultural life

Languages and language families

Estimates of the number of African languages depend on how dialects and closely related varieties are counted. Britannica gives an estimate of 900 to 1,500 distinct languages, while one academic overview puts the figure at more than 2,000. The classical grouping into four families, Niger-Congo, Nilo-Saharan, Afro-Asiatic, and Khoisan, is widely used but regarded as an oversimplification, since the true number of African language families likely surpasses 20, including a number of isolates and sign languages.

Niger-Congo is the largest family by both speakers and languages, stretching from West Africa to East and Southern Africa. Its best-known subgroup is Bantu, which is spread across much of central, eastern and southern Africa and includes most of the continent's largest languages in those regions. Afro-Asiatic languages are concentrated in the north and the Horn, including Arabic and Amharic. Its branches include Berber, Cushitic, Chadic, Semitic and Egyptian, and the Egyptian branch is known from extinct languages known from written records, such as Ancient Egyptian (see ancient Egypt). Nilo-Saharan languages are geographically scattered, with languages spoken along the savanna zone south of the Sahara. The Khoisan group is the smallest and most fragile. Its languages comprise the languages of the aboriginal peoples of Southern Africa, and once had more than 100 languages, and today has only 30 or 35 languages still in existence. Several contact languages also developed from these families, such as Arabic-based languages such as Nubi and Juba Arabic and Sango, Kituba and Fanagalo.

Lingua francas and colonial languages

Swahili is the most important example of a language that crossed ethnic boundaries. Its name derives from an Arabic term meaning "of the coast" (the word Swahili comes from the Arabic term meaning "of the coast"). It began as a trade language used by several closely related Bantu-speaking tribal groups under Arab influence, and developed to become the common coastal language as early as the 13th century. In the nineteenth century its spread inland was accelerated by the caravans that moved ivory and slaves, and German colonial language policy encouraged the use of Swahili in commerce, the military, administration, and education in Tanzania. The African Union has adopted it as one of its working languages together with colonial languages such as English, French, Arabic and Portuguese. Its status is uneven: it is an official language in Tanzania, Kenya, Uganda, and Rwanda, and it is spoken by over 100M speakers in over 10 East and South-Eastern African countries, though most of these speakers use it as a second language.

Hausa, a Chadic language, plays a comparable role in West Africa. Its largest populations are in northern Nigeria and southern Niger, and speaker estimates vary, with one source citing approximately 120 million first-language (L1) and 80 million second-language (L2) speakers. Its script changed over time: its original writing system was based on Arabic script, but during the colonial era it transitioned to the Latin alphabet. In 2025 Niger made it the sole official language, replacing French.

Colonial rule left European languages as the main languages of state. Colonial rule left English, French and Portuguese, and to a lesser extent Spanish, as official languages in most African countries. These languages remain the main languages of government, higher education and international business, although most Africans speak them as a second language. The pattern follows colonial history: in West Africa, French is official in five countries, English in five, and Portuguese in two. Language policy also varied within a single colony. In Tanzania, the British influence and a nationalistic movement between 1919 and 1961 led to a bilingual English–Swahili language policy, and English became the language of the schools and administration.

Religion

Christianity and Islam are the two largest religions. Survey estimates for sub-Saharan Africa indicate that most people living in the region are Christians (62%), while Muslims make up about a third of the population as of 2020. The two faiths are geographically sorted: Muslim-majority countries are in the north, closer to North Africa and the Middle East, while Christian-majority countries are in the south. North Africa is more uniformly Muslim, with Islam being the religion of over 90 percent of the population in Algeria, Morocco, Tunisia, and Libya. Islam first reached the continent during the early 7th century CE.

Continent-wide figures vary by source. One survey places Muslims at about 33% of the population, while other estimates may place the population of Muslims as a share of the continent closer to 45%. Within countries the distribution can be sharply uneven: in Ghana, Christianity is the largest religion, with 71.3% of the population belonging to various Christian denominations as of 2021 census. Traditional African religions are hard to measure, because older, traditional beliefs – including animism and Indigenous religious traditions – are often integrated into the monotheistic religions. Ethiopia's Orthodox Tewahedo church, with its liturgy in Ge'ez, is a distinct Christian tradition with a long local history.

Cultural life

Oral traditions remain central to African cultural life. Most of the continent's languages are primarily oral with little available in written form, so proverbs, epics, praise poetry and historical narratives have been transmitted through performance. Written literature developed in several languages, and Swahili literature, drama and poetry are a notable example. Linguist and writer Ngugi wa Thiong'o has argued that Kiswahili is also a symbol of cultural liberation from Eurocentric culture. African writers in European languages have achieved international recognition, including the Nobel Prize in Literature awarded to Wole Soyinka (1986), Naguib Mahfouz (1988), Nadine Gordimer (1991), J. M. Coetzee (2003) and Abdulrazak Gurnah (2021). Music and dance are equally diverse, drawing on local ritual, urban popular forms and religious practice across the continent. See music, dance, poetry and literature.

Economy and natural resources

Africa's combined economy is large but unevenly spread. The continent's GDP was estimated at about 2.82 trillion US dollars in nominal terms for 2025, or about 10.77 trillion at purchasing power parity, which works out to roughly 1,920 dollars of nominal output per person GDP (nominal): $2.82 trillion (2025 est; 5th). Averages hide the spread. In a 2025 IMF-based ranking, Seychelles reached about 18,479 dollars per person in nominal terms, while South Sudan $470 (IMF) and Ethiopia at $933 sat near the bottom of the table. Output is also concentrated in a few places. South Africa is Africa's largest economy (Oct 2025), a diversified, upper-middle-income market, and South Africa has Africa's highest GDP, but also counts the sixth-largest population, so wealth has to be divided into its big population. Egypt is usually ranked second by size.

Hydrocarbons anchor several of the largest producers. Africa produces nearly 10 million barrels of oil daily, accounting for about 10% of global crude oil production. Africa's oil production is led by Nigeria and Angola, both producing over 1 million barrels per day. Nigeria's output has recovered to about 1.51 million barrels per day after years of theft, vandalism and under-investment has recovered to about 1.51 million barrels per day after years of disruption caused by theft, vandalism, and under-investment.. Algeria and Libya are the main North African producers, though Libya's output is shaped by political instability Libya's output is affected by political instability. Algeria also exports natural gas to Europe It also exports significant quantities of natural gas to Europe, enhancing its geopolitical leverage.. Dependence on oil varies widely. Oil accounted for over 5% of Nigeria's GDP in the third quarter of 2023, while in Libya oil rents exceeded 40% of GDP In Nigeria, oil generates over five percent of the country's GDP in the third quarter of 2023. In Libya, for instance, oil rents account for over 40 percent of the GDP.. Africa is a net exporter of crude but a net importer of refined petroleum products While Africa is a net exporter of crude oil, it is also a net importer of petroleum products.. Angola left OPEC in January 2024 Angola formally exited OPEC in January 2024 and now produces without quota constraints..

Mineral wealth is concentrated in a few commodities and countries. The Democratic Republic of the Congo (DRC) produces 96% of the continent's output, almost entirely as a by-product of copper of cobalt, and it accounted for 72% of global cobalt production in 2021. Estimates of Africa's share of global cobalt reserves differ: one CSIS-based figure is 47% of cobalt reserves, while another source cites 55% of the world's cobalt deposit. Lithium and copper shares also vary by source. One estimate puts Africa at less than 4% of the world's lithium reserves, while another gives 6% of the world's total reserves for a group of countries. For copper, The DRC and Zambia together account for 50,000 tonnes of global copper reserves which represent 5% of total global copper reserves. South Africa has between 80% and 90% of the world's platinum group metals. Botswana's diamond output comes largely through Debswana, the 50:50 venture with De Beers.. Despite this endowment, Africa's share of global industrial minerals output as a whole is just 5.5%. Much of the value is captured elsewhere. The DRC earns roughly $8 billion per annum despite supplying 70% of the world's cobalt. Demand projections could raise the profile of these minerals: the IEA predicted in 2025 that the demand for lithium would increase fivefold between 2025 and 2040. This pattern feeds the debate over the resource curse.

Agriculture employs a large share of the population, mostly on smallholder plots that depend on rain-fed production, with limited mechanisation and modest use of fertilizer and irrigation in many countries. Export crops such as cocoa in West Africa and coffee in Ethiopia and East Africa bring foreign exchange but expose farmers and governments to sharp price swings. Food security is fragile: several countries import a considerable part of their staples, and drought, conflict and price shocks can quickly push households into hunger. Trade remains a weaker part of the picture, with intra-African exchange low relative to other regions and many economies still exporting raw materials with limited processing. External debt has grown in many countries, and rising interest costs compete with spending on health and education. Infrastructure deficits in power, transport and water constrain both growth and industrial development. Most workers are engaged in the informal economy, where earnings are low, social protection is limited and tax revenues are difficult to collect.

Health and disease burden

Infectious disease

Infectious disease still causes a much larger share of deaths in Africa than in most other regions. Malaria is the clearest case. A 2025 commentary in The Lancet Infectious Diseases, using WHO figures for 2024, attributes about 95% of the 263 million malaria cases and deaths worldwide to the continent, and children under five account for roughly three-quarters of the deaths. The African Union's 2025 progress report counts 270.8 million malaria cases (96% of the global total) and 594,119 deaths in member states in 2024, and says that progress toward elimination has stalled since 2015. Insecticide resistance is one reason for the stall, and dual active-ingredient nets, designed to address that threat, made up 74% of the nets distributed across 39 member states in 2025.

Tuberculosis presents a different trend. The WHO ranks it as the leading cause of death from a single infectious agent, ahead of HIV/AIDS. Within the WHO African Region, TB incidence fell by about 28% and TB deaths by about 46% between 2015 and 2024, faster than the global averages over the same period. The region still carries a heavy load: 17 of the 30 countries with the highest TB burdens are in the WHO African Region, including the Democratic Republic of the Congo, Nigeria and South Africa. The overlap with HIV is central to this burden. In 2024, about 390,000 TB cases in the region were attributable to HIV infection, roughly one third of all TB cases there. Earlier estimates placed HIV coinfection among TB patients in sub-Saharan Africa at up to 70%. Testing coverage has improved, with 89% of people with TB knowing their HIV status in 2024, the highest of any WHO region. The WHO has warned that cuts in international donor funding in 2025 put service gaps at risk in high-burden countries, and that domestic budgets are therefore more important.

Sub-Saharan Africa also holds most of the world's people living with HIV, and neglected tropical diseases such as schistosomiasis, onchocerciasis, lymphatic filariasis, trachoma and human African trypanosomiasis remain concentrated in poor rural areas. Mass drug administration and vector control have reduced several of these diseases, though many communities still lack consistent treatment.

Child survival and vaccination

Child survival has improved considerably since 2000. The under-five mortality rate fell by 64%, from 153 per 1,000 in 2000 to 81 in 2015. Sub-Saharan Africa nonetheless still has the highest child mortality rate in the world, averaging 76 deaths per 1,000 live births in 2019. Over the same period, average life expectancy at birth has risen, partly because adult and child mortality has declined.

Immunisation is among the strongest contributors to these gains. A 2024 modelling study in The Lancet estimated that vaccination was responsible for 40% of the observed decline in global infant mortality, and 52% in the African region. Regional campaigns are estimated to have prevented more than 50 million deaths between 1974 and 2024. Coverage gaps persist, however. Each year since 2020, more than nine million infants in Africa have not been fully immunised, including zero-dose children who have not started their vaccination series. Mass campaigns against meningitis A show the potential of targeted programmes: after the vaccine's introduction in 2010, mass vaccination led to the control and near elimination of meningitis A in 26 African "meningitis belt" countries.

Health system capacity and workforce

Health systems are constrained chiefly by staffing. The WHO reports that the African region currently has only 46% of the health workers it needs, although the projected shortfall for 2030 has been revised from 6.1 million to 5.85 million. Staff are also unevenly distributed. The WHO density threshold of 4.45 health workers per 1,000 people is needed for essential services and universal health coverage, yet only four countries (Mauritius, Namibia, Seychelles and South Africa) have surpassed the WHO health worker-to-population ratio. The problem is compounded by unemployment and migration. In 2024, an estimated 943,000 trained health workers were unemployed, while for every 10 doctors and nurses working within the African region, at least one is employed abroad. In response, African health ministers endorsed the Africa Health Workforce Agenda 2026–2035, a decade-long plan to educate, employ and retain three million additional health workers.

Emerging threats

Several newer challenges sit alongside these long-standing burdens. Epidemics of Ebola have struck repeatedly, including the 2014–2016 outbreak in West Africa and several outbreaks in the Democratic Republic of the Congo. cholera recurs in conflict zones and in areas with weak water and sanitation, and mpox became a global health emergency in 2024. Rising antimicrobial resistance threatens to make routine treatment of infections, including TB and malaria, harder to deliver. Non-communicable diseases such as hypertension, diabetes and cancer are also increasing as populations age and urbanise and dietary patterns change, placing additional strain on health systems that are still organised around infectious disease.

Climate vulnerability, environment and energy

Africa's climate risk is expressed mainly through rainfall that swings between extremes. The Sahel, the semi-arid belt south of the Sahara, has repeatedly alternated between prolonged drought and intense rains that cause flash floods, and its population depends heavily on rain-fed farming and pastoralism. Southern Africa shows a similar pattern, with multi-year dry spells linked to El Niño events and, in wetter years, severe flooding such as the 2019 floods in Mozambique after Cyclone Idai. Desertification, the degradation of drylands through overgrazing, cultivation and loss of vegetation, is often cited alongside these hazards. Its relative weight as a climatic versus land-use driver is still debated. The WMO's State of the Climate in Africa 2022 report documents faster warming across the continent and more severe weather hazards, from heat to prolonged drought.

Lake Chad shows how these pressures combine. Estimates put the lake's contraction at close to ninety percent since the 1960s, though other sources give a different figure: it has shrunk to roughly 5 percent of its original size within fifty years. The lake's area was about 25,000 square kilometres in 1963. Researchers attribute the decline to several interacting causes. Reduced and erratic rainfall, combined with high evaporation rates, has been linked to climate change, while population increase, and dams and reservoirs built on the tributaries that feed the lake have also contributed to the lake's decline. Irrigation withdrawals add to the stress. The shrinkage has not been a simple one-way trend. Rainfall variability creates excessive rains that replenish the lake and cause flooding. The receding shoreline has opened fertile land for crops and grazing, but fishing and irrigated agriculture have lost their basis. Estimates of the population that depends on the basin range from more than 30 million to around 50 million. Competition over the remaining water has also fed local conflict, which in turn weakens communities' ability to adapt.

Energy access is one of the continent's most pressing gaps. Access to electricity increased from approximately 46% in 2015 to about 53% in 2023, yet nearly 600 million people remain without power. The divide between towns and villages is wide: urban electrification rates exceed 80%, the report found, while rural access remains below 40% in many countries. Sub-Saharan Africa's share of the global deficit has grown; one analysis reports that the region accounted for 49 percent of the global electricity access deficit in 2010, and by 2024, that share had risen to 86 percent. Connection figures are also not the same as service quality. Survey data suggest that fewer than half (44%) of Africans enjoy a supply of electricity that works "most" or "all" of the time. Off-grid and mini-grid solar systems are widely seen as a route to closing the gap in dispersed rural areas, while large hydropower projects offer generation capacity on major rivers, though both face financing and grid-integration constraints.

Africa's contribution to the climate problem is small relative to its exposure. Africa contributes only 4% of global energy-related greenhouse gas (GHG) emissions. On a per-person basis the gap is wide: Emissions of carbon dioxide per person in Africa in 2021 were 1.04 metric tons, compared to the global average more than four times that. Yet the continent's vulnerability is high. In one climate vulnerability index, nine out of the top 10 world's most vulnerable countries were in Sub-Saharan Africa. Land-use change and extractive activity contribute to local environmental stress. Deforestation is a concern in West Africa and in parts of the Congo Basin, which holds 70% of Africa's forests. Artisanal and industrial mining for gold, copper and cobalt causes water pollution and soil degradation, while household cooking with solid fuels and urban traffic are major sources of air pollution.

Infrastructure, digital development and science

Mobile money and mobile connectivity

Mobile money is one of the continent's best-known digital innovations. In Kenya, M-Pesa was launched in 2007 by Safaricom and Vodafone, and it lets users send and receive money with only a SIM-card phone, without needing an internet connection. By June 2020, the Communications Authority of Kenya counted about 30.5 million active registered mobile money subscriptions, served through a network of agents, many of them corner shops and petrol stations that accept cash deposits and pay out withdrawals. Later figures differ by method. Industry trackers reported roughly 54 million subscriptions in 2026, with M-Pesa holding close to 89 per cent of the market, and they note that registered accounts can exceed the population because one person may hold several. Safaricom's own count of one-month active M-Pesa users was 37.9 million in the half-year to September 2025. Over the same period, its mobile money revenue exceeded the combined revenue from mobile data, voice and messaging.

Mobile money is closely tied to the spread of mobile phones, smartphones and mobile internet access. Phones with basic features made payments possible before smartphone ownership became widespread, and the cheaper smartphones that followed have widened access to data services. Gaps remain, and the digital divide is still most pronounced in rural areas and among low-income households, where coverage, device costs and electricity supply limit use. Services such as mobile money are therefore concentrated in regions where mobile networks reach most people.

Submarine cables and connectivity

Most international data traffic moves through undersea fibre-optic cables, which are known as submarine cables. Before these cables reached the East African coast, one megabit per second of satellite capacity cost roughly USD 2,000 per month, and the Internet Society reports that the cables later cut latency by about 400 per cent and internet costs by more than 50 per cent in that sub-region. The Africa Coast to Europe system, completed in 2012 at a cost of about USD 700 million, stretches for roughly 17,000 kilometres and lands along the west coast, while the West Africa Cable System has 14 landing points, and the landings in Namibia, the DRC, the Republic of Congo and Togo provide the first direct connections for these countries to the global network. Newer projects are much larger. The 2Africa system is planned at about 37,000 kilometres, with a design capacity of 180 Tbps.

Cables are vulnerable, and repairs are slow and costly. Repairing a submarine cable averages between $1 million and $3 million, and specialised repair ships can take weeks to reach African waters. Cuts in 2024 disrupted West Africa's connectivity, with one analysis estimating that they cost Nigeria over $590 million within four days. Landlocked states depend on terrestrial cross-border fibre to reach coastal landing stations. Capacity that is available does not always reach users at lower prices, because the benefit depends on competition at international gateways. In Cameroon, for example, the state operator reportedly used only about 16 per cent of the combined capacity of its four submarine cables in 2024.

Universities, research and brain drain

African research output remains small in global terms. One commonly cited estimate puts the continent's share of world research output at about 1 per cent, and national research and development spending is often between 0.1 and 0.6 per cent of GDP. The World Bank has noted that higher education systems are skewed towards the humanities and social sciences, and that research funding in Sub-Saharan Africa concentrates heavily on health and agriculture. Many universities face shortages of laboratories, libraries and senior staff, and salaries and working conditions push qualified staff abroad. The World Bank has identified Nigeria, South Africa, Kenya and Ghana among the countries most affected by brain drain in the medical and engineering professions.

Several programmes aim to keep researchers at home. South Africa's Research Chairs Initiative, begun in 2006, funds chairs at public universities to attract and retain scientists. The African Union's Kwame Nkrumah Scientific Award, established in 2008, provides USD 100,000 to outstanding scientists in life and earth sciences and in basic science and technology. A partnership between the Alliance for Accelerating Excellence in Science in Africa and the Gates Foundation committed USD 7 million over five years to health research grants. A doctoral fellowship scheme for PhD study in African universities found that 25 of 28 graduates were working in their countries of origin, suggesting that in-country training can limit brain drain.

Contributions to paleoanthropology, genomics and public health

African researchers and institutions are central to several fields. In human evolution research, the continent holds much of the hominin fossil record. Discoveries include Toumaï (Sahelanthropus tchadensis) from Chad, Lucy (Australopithecus afarensis) from Hadar in Ethiopia, and Homo naledi from the Rising Star cave system in South Africa. Many recent fieldwork projects in East and southern Africa are run by teams that include researchers and museum staff based in African institutions.

In genomics, large projects have sought to correct the underrepresentation of African populations in global reference databases. The Human Heredity and Health in Africa initiative, launched in 2012 by the US National Institutes of Health and the Wellcome Trust, aimed to build sequencing and analysis capacity inside African institutions. Genomic surveillance has also become important for infectious disease monitoring. In November 2021, South African scientists announced the Omicron variant of SARS-CoV-2 after rapid sequencing, and the African Union's Africa CDC, established in 2017, coordinates continental responses to outbreaks, which links research capacity to public health decision-making.

Debates, data gaps and unresolved questions

Reliability of census, GDP and poverty data

Many of the continent's basic numbers rest on weak foundations. The Open Data Inventory for 2022/23 gave African countries an average coverage score of 39 out of 100, against a global average of 47, and an average openness score of 41 against 53 globally. Only three African countries had death registration systems that record at least 90 per cent of deaths, and in 14 countries the last population census predates 2010, so recent planning relies on estimates. Poverty data are similarly thin: only five countries had measurements against the international poverty line for 2019 to 2022.

Even where censuses are held, their accuracy is contested. South Africa's 2022 census undercounted the population by a margin that was roughly twice the 2011 figure, and the statistics agency's own follow-up survey indicated that it had missed nearly a third of residents. Demographers have argued that the adjustments used to correct the count imply more precision than the data can support. Among the African censuses assessed with the UN Age-Sex Accuracy Index, only South Africa's 2011 census scored as accurate. Informal trade and small-scale farming, which employ a large share of workers, are poorly captured in national accounts, so GDP estimates and rebasing exercises can shift a country's measured economy substantially without any change in actual output. Budget constraints have compounded these problems, and donor-funded household surveys have been cancelled or delayed in several countries.

Dating the earliest Homo sapiens

The fossil record for the emergence of the species is sparse, and the ages of many key specimens remain uncertain. The best-known case is Jebel Irhoud in Morocco, where excavations began in the 1960s and resumed in 2004. In 2017, researchers dated the site to about 300,000 years ago, and they assigned the hominins to the earliest phase of Homo sapiens, using thermoluminescence on heated flints to date the deposits. The Florisbad skull from South Africa, long considered a possible early member of the species, is a partial specimen whose age and classification remain disputed.

The Jebel Irhoud results sharpened, rather than settled, the debate about where and how modern humans arose. One view holds that a recognisably modern face and braincase emerged rapidly around 200,000 years ago in East Africa. Another holds that modern features accumulated gradually over roughly 400,000 years in several regions. Because the Moroccan evidence suggests the species existed across much of the continent by 300,000 years ago, a pan-African model of diverse, interacting populations has gained ground, although dating methods for many sites are still contested.

The origins and spread of the Bantu expansion

Bantu languages are spoken across most of sub-Saharan Africa south of the equator and belong to the Niger-Congo family. The primary evidence for the expansion is linguistic: the languages across this area are strikingly similar, which has been taken to indicate a common origin. Scholars generally place the homeland in the borderland of present-day Cameroon and Nigeria, but estimates of the timing range from roughly 5,000 to roughly 3,000 years ago, and the routes are disputed.

The main disagreement concerns the branching of eastern and western languages. The "early split" model holds that eastern languages diverged north of the Central African rainforest around 4,000 years ago, whereas the "late split" model places their divergence south of the forest about 2,000 years ago. Genetic and linguistic studies have been read as favouring the late-split scenario, but not decisively. Genetic evidence is complicated by admixture with earlier hunter-gatherer and herding populations, and a 2012 study of the spread into south-eastern Africa argued that language shift, rather than large-scale movement of people, may have carried Bantu languages there. Some specialists have argued that the correlations among linguistic, genetic and archaeological evidence are weaker than often assumed, and that no single coherent narrative is yet supported by the data.

Precolonial states and the use of written and oral sources

Historians of precolonial Africa face a documentary imbalance. Written records from Egypt, Aksum, the Islamic world and later European observers are unevenly distributed, while many West, Central and southern African polities are known largely through oral traditions, royal genealogies and archaeology. Interpreting oral material requires assessing how memories of rulers, migrations and wars were preserved and reshaped, and chronologies drawn from such traditions are difficult to check against external dates. Scholars also debate whether the term "state" fits many precolonial polities, and how far long-distance trade, religion and writing shaped political authority in regions such as the Sahel, the Swahili coast and the Zimbabwe plateau. These questions affect how the empires of the medieval period and the kingdoms of the interior are evaluated, and different disciplines often give different weight to the same evidence.

Definitions of regions and of the continent

There is no single accepted way to divide Africa into regions. The UN's five-part scheme of Northern, Western, Middle, Eastern and Southern Africa is widely used but is an administrative convention. The Sahara serves as a conventional boundary, yet some sources place the Sahara's northern states in a regional group with the Middle East and others group them with Sub-Saharan Africa, which means that the scope of "North Africa" and "Sub-Saharan Africa" varies by source. Classifications also differ on whether Madagascar and the Indian Ocean islands are included, and on whether the continent should be treated separately from Eurasia. These definitional choices affect population totals, economic comparisons and the statistics cited in international reports, and they therefore feed back into the data problems described above.

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