What affect did the United States stock market crash have on the world economy

Wages fell 42 percent as unemployment rose to 25 percent. U. S. economic growth decreased 50 percent and world trade plummeted 65 percent. As a result of deflation, prices fell 10 percent a year between 1929 and 1933. Below you can see a chart tracking key events leading up to the 1929 stock market crash.