The Great Depression started in 1929, with the economic downturn widely considered to have begun with the Wall Street stock market crash in October 1929. The crash events include Black Thursday on October 24, 1929, followed by Black Monday and Black Tuesday at the end of October, which marked the start of a severe decade-long global economic crisis lasting roughly until 1939. The Great Depression unfolded from this initial market collapse with spirals of unemployment, poverty, industrial decline, and financial failures worldwide, especially pronounced in the United States.
