The
Wall Street Crash of 1929, also known as
Black Tuesday (October 29), the
Great Crash, or the
Stock Market Crash of 1929, began on October 24, 1929 ("Black Thursday"), 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.