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- There have been as many as 48 recessions in the United States dating back to the Articles of Confederation, and although economists and historians dispute certain 19th-century recessions, the consensus view among economists and historians is that "The cyclical volatility of GDP and unemployment was greater before the Great Depression than it has been since the end of World War II." Cycles in the country's agricultural production, industrial production, consumption, business investment, and the health of the banking industry contribute to these declines. U.S. recessions have increasingly affected economies on a worldwide scale, especially as countries' economies become more intertwined. The unofficial beginning and ending dates of recessions in the United States have been defined by the National Bureau of Economic Research (NBER), an American private nonprofit research organization. The NBER defines a recession as "a significant decline in economic activity spread across the economy, lasting more than two quarters which is 6 months, normally visible in real gross domestic product (GDP), real income, employment, industrial production, and wholesale-retail sales". In the 19th century, recessions frequently coincided with financial crises. Determining the occurrence of pre-20th-century recessions is more difficult due to the dearth of economic statistics, so scholars rely on historical accounts of economic activity, such as contemporary newspapers or business ledgers. Although the NBER does not date recessions before 1857, economists customarily extrapolate dates of U.S. recessions back to 1790 from business annals based on various contemporary descriptions. Their work is aided by historical patterns, in that recessions often follow external shocks to the economic system such as wars and variations in the weather affecting agriculture, as well as banking crises. Major modern economic statistics, such as unemployment and GDP, were not compiled on a regular and standardized basis until after World War II. The average duration of the 11 recessions between 1945 and 2001 is 10 months, compared to 18 months for recessions between 1919 and 1945, and 22 months for recessions from 1854 to 1919. Because of the great changes in the economy over the centuries, it is difficult to compare the severity of modern recessions to early recessions. Before the COVID-19 recession began in March 2020, no post-World War II era had come anywhere near the depth of the Great Depression, which lasted from 1929 until 1941 (which included a bull market between 1933 and 1937) and was caused by the 1929 crash of the stock market and other factors. (en)
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- There have been as many as 48 recessions in the United States dating back to the Articles of Confederation, and although economists and historians dispute certain 19th-century recessions, the consensus view among economists and historians is that "The cyclical volatility of GDP and unemployment was greater before the Great Depression than it has been since the end of World War II." Cycles in the country's agricultural production, industrial production, consumption, business investment, and the health of the banking industry contribute to these declines. U.S. recessions have increasingly affected economies on a worldwide scale, especially as countries' economies become more intertwined. (en)
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