The Great Depression began after the stock market crash of 1929 and lasted throughout the 1930s. Several factors contributed to the crash and prolonged economic crisis, including overproduction, uneven income distribution, declining exports, mistakes by the Federal Reserve, and droughts that caused the Dust Bowl. As unemployment rose above 25%, many Americans lost their homes and lived in shantytowns. President Hoover did not take action to help citizens, worsening the crisis until Franklin D. Roosevelt was elected and began the New Deal programs to provide relief.