The two things that greatly helped the American Economy after World War II were the creation of the GI Bill, and the Marshall Plan for helping nations. After WWII the Truman administration passed the Servicemen's Readjustment Act, also known as the GI Bill, by which veterans were provided with low-cost loans to buy a house, or start a business. They also had the opportunity of free college education. The Marshall Plan helped U.S. economy because the European nations and Japan, in return bought machinery from the U.S.