S. and Europe. This imbalance of wealth created an unstable economy. The excessive speculation in the late 1920's kept the stock market artificially high, but eventually lead to large market crashes. These market crashes, combined with the misdistribution of wealth, caused the American economy to capsize. The large and growing disparity of wealth between the rich and the middle-income citizens made the U.S. economy unstable. For an economy to function properly, total demand must equal total supply. In an economy with such disparate distribution of income it is not assured that demand will always equal supply. Essentially what happened in the 1920's was that there was an oversupply of goods. It was not that the surplus products of industrialized society were not wanted, but rather that those whose needs were not satisfied could not afford more, whereas spending only a small portion of their income the wealthy were satisfied. There were several causes to this awkward distribution of income and wealth between U.S. and its European counterparts. Most obvious is that fact that World War I had devastated European business. Factories, homes, and farms had been destroyed in the war. It would take time and money to recuperate. Equally important to causing the disparate distribution of wealth was tariff policy of the United States. The United States had traditionally placed tariffs on imports from foreign countries in order to protect American business. In the 1920's the United States strived to be the world's banker, food producer, and manufacturer, but to buy as little as possible from the world in return. This attempt to have a constantly favorable trade balance could not succeed for long. The United States maintained high trade barriers so as to protect American business, but if the United States would not buy from our European counterparts, then there was no way for them to buy from the Americans, or even to pay interest on U.
