Black Thursday on Wall Street
The Wall Street Crash of 1929, also known as the Stock Market Crash of 1929 or the Great Crash, is a major stock market crash that occurred in late October 1929. It started on October 24 ("Black Thursday") and continued until October 29, 1929 ("Black Tuesday"), when share prices on the New York Stock Exchange collapsed.
It 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 after effects. The crash, which followed the London Stock Exchange's crash of September, signaled the beginning of the 12-year Great Depression that affected all Western industrialized countries.