consumer-products plants filled many military orders. Automakers built tanks and aircraft, for example, making the United States the "arsenal of democracy." In an effort to prevent rising national income and scarce consumer products to cause inflation, the newly created Office of Price Administration controlled rents on some dwellings, rationed consumer items ranging from sugar to gasoline, and otherwise tried to restrain price increases.

The Postwar Economy: 1945-1960 Many Americans feared that the end of World War II and the subsequent drop in military spending might bring back the hard times of the Great Depression. But instead, pent-up consumer demand fueled exceptionally strong economic growth in the postwar period. The automobile industry successfully converted back to producing cars, and new industries such as aviation and electronics grew by leaps and bounds. A housing boom, stimulated in part by easily affordable mortgages for returning members of the military, added to the expansion. The nation's gross national product rose from about $200,000 million in 1940 to $300,000 million in 1950 and to more than $500,000 million in 1960. At the same time, the jump in postwar births, known as the "baby boom," increased the number of consumers. More and more Americans joined the middle class. The need to produce war supplies had given rise to a huge military-industrial complex (a term coined by Dwight D. Eisenhower, who served as the U.S. president from 1953 through 1961). It did not disappear with the war's end. As the Iron Curtain descended across Europe and the United States found itself embroiled in a cold war with the Soviet Union, the government maintained substantial fighting capacity and invested in sophisticated weapons such as the hydrogen bomb. Economic aid flowed to war-ravaged European countries under the Marshall Plan, which also helped maintain markets for numerous U.S. goods. And the government itself recognized its central role in economic affairs. The 30