The Great Depression was mostly caused by the government. The government became too involved with the market by causing restrictions on businesses and by increasing the money supply. He instituted the New Deal, which both helped and hurt the economy.
FDR did not want to have “unfair competition or monopolies,” so he made some regulations that would slow down some businesses. He revolutionized labor unions with the Wagner Act, which in my opinion was unfair to the employers. I believe that there could have been some sort of happy medium reached.
Under the New Deal there were banking laws that prohibited banks from opening more branches. Under this law thousands of American banks failed. Canada, however, did not have a single failure among its banks. It was going through the same recession but they didn’t have the same kind of government intervention specifically the banking laws.
I believe that it is a myth that the Great Depression was caused by a failure of the free market and was resolved by government intervention. We found out later through Ronald Reagan and Margaret Thatcher the benefits of less government involvement. The best thing to do is to decrease government spending when times are good and too increase government spending during a recession.