For the United States, World War II and the Great Depression constituted the most important economic event of the twentieth century. The war's effects were varied and far-reaching. The war decisively ended the depression itself. The federal government emerged from the war as a potent economic actor, able to regulate economic activity and to partially control the economy through spending and consumption. American industry was revitalized by the war, and many sectors were by 1945 either sharply oriented to defense production (for example, aerospace and electronics) or completely dependent on it (atomic energy). The organized labor movement, strengthened by the war beyond even its depression-era height, became a major counterbalance to both the government and private industry.(David ,2001)The war's rapid scientific and technological changes continued and intensified trends begun during the Great Depression and created a permanent expectation of continued innovation on the part of many scientists, engineers, government officials and citizens. Similarly, the substantial increases in personal income and frequently, if not always, in quality of life during the war led many Americans to foresee permanent improvements to their material circumstances, even as others feared a postwar return of the depression. Finally, the war's global scale severely damaged every major economy in the world except for the United States, which thus enjoyed unprecedented economic and political power after 1945.(Ryder,2002)
The Great Depression Period
The global conflict which was labeled World War II emerged from the Great Depression, an upheaval which destabilized governments, economies, and entire nations around the world. In Germany, for instance, the rise of Adolph Hitler and the Nazi party occurred at least partly because Hitler claimed to be able to transform a weakened Germany into a self-sufficient military and economic power which could control its own destiny in European and world affairs, even as liberal powers like the United States and Great Britain were buffeted by the depression.
In the United States, President Franklin Roosevelt promised, less dramatically, to enact a "New Deal" which would essentially reconstruct American capitalism and governance on a new basis. As it waxed and waned between 1933 and 1940, Roosevelt's New Deal mitigated some effects of the Great Depression, but did not end the economic crisis. In 1939, when World War II erupted in Europe with Germany's invasion of Poland, numerous economic indicators suggested that the United States was still deeply mired in the depression. For instance, after 1929 the American gross domestic product declined for four straight years, then slowly and haltingly climbed back to its 1929 level, which was finally exceeded again in 1936.
Unemployment was another measure of the depression's impact. Between 1929 and 1939, the American unemployment rate averaged 13.3 percent (calculated from "Corrected BLS" figures in Darby, 1976, 8). In the summer of 1940, about 5.3 million Americans were still unemployed — far fewer than the 11.5 million who had been unemployed in 1932 (about thirty percent of the American workforce) but still a significant pool of unused labor and, often, suffering ...