The stock market crash of 1929 was not the sole cause of the Great Depression, but it did act to accelerate the global economic collapse of which it was also a symptom. By 1933, nearly half of America's banks had failed, and unemployment was approaching 15 million people, or 30 percent of the workforce. I got this from: www.history.com/.amp/topics/great-depression/1929-stock-market-crash Hopefully this helps!