The Wall Street Crash of 1929, also known as Black Tuesday and the Stock Market Crash of 1929, began in late October 1929 and was the most devastating stock market crash in the history of the United States, when taking into consideration the full extent and duration of its fallout. The crash signaled the beginning of the 10-year Great Depression that affected all Western industrialized countries The American mobilization for World War II at the end of 1941 moved approximately ten million people out of the civilian labor force and into the war. World War II had a dramatic effect on many parts of the economy, and may have hastened the end of the Great Depression in the United States. Government-financed capital spending accounted for only 5 percent of the annual U.S. investment in industrial capital in 1940; by 1943, the government accounted for 67 percent of U.S. capital investment.
Anyone who bought stocks in mid-1929 and held onto them saw most of his or her adult life pass by before getting back to even.