During Hoover's administration, the stock market collapsed. This was such a huge deal because people were borrowing money from the banks and putting in stock market. When the collapse occurred people were unable to repay the banks the money they took out, the banks failed.
They didn't encourage it, but they did it to expand their empire, wealth, and power, through exploring the New World.
The answer is riots broke out in more than one hundred cities around the nation
