The stock market crash of 1929. It devastated millions of people. But no single person caused it to crash. In fact it was millions of people thinking the stock would continue to rise and them starting to spend money that they did not have so the banks turned to deposit slips. Therefore causing them to lose their hard earned money because of banks failing. During the 30s, the average of banks failing was 70% nationally. 9,000 banks in all from the year 1929 to the year of 1939. It has been estimated that in the year of 1933 alone 4,000 banks crashed. Also during this decade of depression many people lost jobs, hope, and in some cases lives. The stock market crash of 1929, it devastated millions of people leaving them hopeless and homeless.