The Great Depression was a prolonged worldwide economic crisis that began in 1929 and dominated the 1930s. It involved sharp declines in production, widespread unemployment, financial instability, and falling prices. Its timing and severity varied between countries; in the United States, recovery began in 1933, but full output and employment returned during World War II. The Depression reshaped economic institutions, government responsibilities, and international relations. (federalreservehistory.org)
Origins and initial collapse
The international economy remained vulnerable after World War I, which disrupted trade and financial relationships. Governments reconstructed the gold standard during the 1920s, tying national currencies to gold and restoring fixed exchange rates. However, the rebuilt system contained imbalances and restricted governments’ ability to respond to economic shocks. Financial difficulties in Europe and the American downturn subsequently developed into a global crisis. (history.state.gov)
In the United States, economic activity began contracting in August 1929, before the Wall Street crash of 1929. The stock-market collapse in October became the crisis’s most recognizable event, but it was not a sufficient explanation for the decade-long depression. The Federal Reserve had raised interest rates in 1928–1929 to restrain securities speculation, slowing economic activity. Because monetary conditions were connected internationally through gold, American tightening also affected other countries. (federalreservehistory.org)
Banking failures and deflation
A succession of banking panics beginning in 1930 transformed the downturn. Depositors sought cash, banks faced mounting withdrawals and losses, and credit became harder to obtain. The Federal Reserve failed to provide sufficient support as a lender of last resort. Institutional fragmentation, disagreements over assistance, and commitments to defending gold convertibility impeded its response. (federalreservehistory.org)
From autumn 1930 to winter 1933, the American money supply fell by nearly 30 percent. The resulting deflation increased the real burden of debts: borrowers owed fixed monetary amounts while prices and incomes declined. Reduced spending, bankruptcies, and financial distress reinforced one another. By 1933, American gross domestic product had fallen approximately 30 percent from its pre-crisis level, and unemployment reached about one-quarter of the workforce. These figures describe the United States, rather than a uniform worldwide experience. (federalreservehistory.org)
International transmission
The gold standard was a central mechanism connecting national crises. Governments trying to preserve their currencies’ gold values faced pressure to maintain restrictive monetary conditions even as domestic employment and production deteriorated. Speculative attacks and financial instability intensified these pressures. Britain left gold in September 1931, and the United States suspended domestic gold convertibility in 1933. Over the following years, essentially all major industrial economies abandoned the system. (federalreserve.gov)
International trade also suffered from protectionism. The American Smoot–Hawley Tariff Act of 1930 raised import duties and became associated with retaliatory trade restrictions. Economic historians differ over the magnitude of its contribution to the Depression, but it did not foster international cooperation. The London Economic Conference of 1933 likewise failed to secure a major coordinated response. (history.state.gov)
Social consequences
Lost employment and income disrupted household life, while breadlines and emergency relief became visible features of American cities. Marriage rates declined, and prolonged financial insecurity affected families’ ability to support themselves. The crisis involved not only falling financial values but also widespread hardship associated with reduced production and employment. (federalreservehistory.org)
In the American Great Plains, the Dust Bowl compounded economic distress. Extended drought, strong winds, and farming and ranching practices that damaged soils produced severe dust storms and crop failures. Many farming families migrated in search of work and better living conditions. Government-sponsored photography, interviews, and recordings documented both the environmental disaster and Depression-era life, leaving an extensive historical record. (guides.loc.gov)
Government responses and recovery
President Franklin D. Roosevelt, inaugurated in March 1933, introduced the New Deal, a collection of banking reforms, relief measures, public employment projects, and agricultural programs. It expanded federal involvement in economic recovery rather than constituting a single, unchanging policy. Banking legislation established deposit insurance and reorganized financial supervision, while employment programs undertook public works and conservation projects. (loc.gov)
Leaving gold enabled countries to pursue more expansionary monetary policy. Historical research associates this policy freedom with recovery: monetary expansion supported domestic spending, while stronger economies increased demand for their trading partners’ exports. These effects differed from tariffs, which redirected or restricted trade. (federalreserve.gov)
Recovery nevertheless remained fragile. The American recession of 1937–1938 interrupted the expansion, with real GDP falling about 10 percent. Explanations emphasize monetary restriction and contractionary fiscal policy, although their relative contributions remain debated. Renewed expansion followed in 1938, and wartime defense production subsequently brought a much larger increase in output and employment. (federalreservehistory.org)
Economic thought and institutions
The Depression became a defining problem for macroeconomics. In The General Theory of Employment, Interest and Money (1936), John Maynard Keynes argued that insufficient total spending could sustain prolonged unemployment without an automatic return to full employment. Keynesian economics consequently emphasized aggregate demand and government stabilization policies. Monetary interpretations instead stressed the contraction of money and failures of central-bank policy. These approaches highlighted different, potentially interacting mechanisms behind the collapse and recovery. (imf.org)