Question: when did the 1929 stock market crash happen
Answer: 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 after effects .