1929    Great Depression: After a steady decline in stock market prices since a peak in September, the New York Stock Exchange begins to show signs of panic.

1929    Great Depression: US President Herbert Hoover announces to the U.S. Congress that the worst effects of the recent stock market crash are behind the nation and the American people have regained faith in the economy.

1997    October 27, 1997 mini-crash: Stock markets around the world crash because of fears of a global economic meltdown. The Dow Jones Industrial Average plummets 554.26 points to 7,161.15. For the first time, the New York Stock Exchange activates its "circuit breakers" twice during the day eventually making the controversial move of closing the Exchange early.