The Great Depression of 1929 created significant consequences for the US economy and world economy that are detected through serious changes in output and prices. It contributed to put greater emphasis on aggregate demand and aggregate supply. Many economists agreed that in addition to monetary factors major impact on the crisis had also non-monetary factors. Numerous studies have indicated that even the gold standard played an important role in reducing output and the price level. This paper attempts to highlight key segments, such as the wrong monetary policy, the gold standard, neglected banking problems, political pressure aimed at relaxing the monetary policy as areas that have made mistakes when looking a way out of the crisis. The cr...