The Han dynasty was China’s second imperial dynasty, succeeding the Qin dynasty and ruling conventionally from 206 BCE to 220 CE, with an interruption in the early first century CE. Founded by Liu Bang, it consolidated imperial government, expanded China’s political and commercial connections, and fostered influential scholarly traditions. Historians distinguish Western, or Former, Han from Eastern, or Later, Han, according to their principal capitals. Some chronologies begin the dynasty in 202 BCE, when Liu Bang became emperor, rather than in 206 BCE, when he became king of Han. (metmuseum.org)
Foundation and chronological divisions
The dynasty emerged from the rebellions and civil wars accompanying Qin’s collapse. Liu Bang defeated his principal rival, Xiang Yu, and assumed the imperial title in 202 BCE, becoming known posthumously as Emperor Gaozu. Western Han ruled principally from Chang’an, near present-day Xi’an. Early rulers retained much of Qin’s administrative organization while reducing some burdens imposed during the preceding wars. (worldhistory.org)
In 9 CE, the regent Wang Mang took the throne and established the Xin dynasty. His government attempted extensive institutional, landholding, and monetary reforms, but encountered resistance, natural disasters, and rebellion. Wang Mang was killed in 23 CE. Liu Xiu, a member of the imperial Liu lineage, proclaimed himself emperor in 25 CE as Emperor Guangwu, restoring Han rule with its capital at Luoyang. Eastern Han continued until 220 CE. (encyclopedia.com)
Government and intellectual foundations
Han government combined an emperor-centered bureaucracy with territorial institutions inherited from Qin. The commandery–county system provided the main framework for local administration. Initially, substantial territories were also assigned to semi-autonomous kings. Their powers diminished through successive reforms, especially after the Rebellion of the Seven States in 154 BCE, as the court increasingly controlled appointments and administration within their domains. (en.wikipedia.org)
Confucianism acquired growing importance in official learning and political legitimacy, particularly under Emperor Wu, who reigned from 141 to 87 BCE. An imperial academy established in 124 BCE trained students in classical scholarship. The Five Classics became central to elite education, linking textual learning with preparation for government service. (nga.gov)
This development did not eliminate administrative practices associated with Legalism. Han government combined moral instruction and ritual with statutes, punishments, taxation, and bureaucratic supervision. Recruitment included recommendations, educational qualifications, and personal connections; it was not yet the standardized imperial examination system familiar from later dynasties. (worldhistory.org)
Economy and society
Agriculture sustained the imperial economy and provided much of its revenue. Farming households owed taxes and, under varying arrangements, labor or military service. Landowners, merchants, artisans, officials, tenants, and enslaved people occupied different positions within a stratified society. Economic conditions changed over the dynasty’s four centuries rather than remaining fixed after the establishment of imperial rule. (cambridge.org)
Iron tools, agricultural development, and regional commerce supported production and exchange. Under Emperor Wu, the government introduced monopolies over salt and iron in 117 BCE, both to strengthen fiscal resources and to control important industries. Their benefits and burdens became subjects of political debate. State intervention coexisted with substantial private enterprise, and policies changed between reigns. (donwagner.dk)
The census of 2 CE recorded approximately 57.7 million people in 12.4 million households. These figures document the scale of Han registration and administration, although they represent recorded subjects rather than a modern demographic estimate. Wealthy landholding families became increasingly influential, particularly during Eastern Han. (en.wikipedia.org)
Frontiers and long-distance exchange
Relations with the Xiongnu confederation shaped northern frontier policy. Early Han rulers employed diplomacy, marriage agreements, and transfers of goods alongside military measures. Emperor Wu pursued sustained campaigns and expanded imperial control into the Gansu corridor, while Han conquests established administrations in parts of present-day Korea and Vietnam. Frontier authority varied across regions and over time. (en.wikipedia.org)
The missions of Zhang Qian increased the court’s knowledge of Central Asia and helped develop diplomatic and commercial connections. Routes subsequently grouped under the name Silk Road carried silk and other goods through networks of intermediaries. Such trade connected Han China indirectly with western Asian societies and the Roman Empire, while also transmitting artistic forms, technologies, and religious ideas. Buddhism began entering China during the Han period through these wider exchanges. (worldhistory.org)
Writing, scholarship, and material culture
Han scholarship produced major works of historical literature. Sima Qian compiled the Records of the Grand Historian, covering legendary antiquity through his own time. Its organization combined chronological accounts, biographies, tables, and thematic treatments. Ban Gu’s Book of Han, subsequently completed by other scholars, became a major account of Western Han history. (worldhistory.org)
Papermaking developed during the dynasty, although bamboo and wooden writing slips and silk remained important media. Clerical script became a characteristic form of writing. Han technical achievements also included advances in astronomical instruments and timekeeping, as well as Zhang Heng’s earthquake-detecting instrument of 132 CE. (en.wikipedia.org)
Tombs preserve paintings, decorated vessels, jade objects, stone reliefs, and ceramic models of buildings, animals, servants, and performers. These burial assemblages provide evidence for beliefs about the afterlife and representations of everyday activity, while disproportionately reflecting the resources and expectations of affluent households. (resources.metmuseum.org)
Disintegration and succession
Eastern Han’s later decades saw struggles among imperial relatives, palace eunuchs, and officials, alongside growing regional military power. The Yellow Turban Rebellion began in 184 CE; its suppression strengthened commanders whose armies increasingly operated independently of the court. (en.wikipedia.org)
After prolonged civil warfare, Emperor Xian abdicated to Cao Pi in 220 CE, ending the dynasty and establishing Wei. The competing regimes of Wei, Shu Han, and Wu formed the Three Kingdoms. Shu Han explicitly claimed continuation of the Liu dynasty, making Han legitimacy an active political issue after the imperial court itself had disappeared. (en.wikipedia.org)