Black Monday: 1987's Stock Market Crash When The World Lost $1.7 Trillion

By Karen Harris
A young man reads a copy of the Evening Standard outside the Royal Exchange in London, with a headline referring to that day's stock market crash, known as Black Monday, October 19, 1987. (Georges De Keerle/Getty Images)

Our history books are filled with details about the big stock market crash of 1929, known as Black Tuesday, that plunged the United States into the Great Depression, but stock market crashes occur so regularly that you can practically set your watch by them. Its impact might not have been quite so Steinbeckian, but Black Monday, the stock market crash of 1987, affected all 23 of the world's largest national stock markets.