In addition to launching surface and submarine assaults against all of the Axis states, the United States launched two simultaneous bombing campaigns against Germany and Japan.
America was the world's leading producer of weapons by 1944, producing more than enough to meet its military requirements. At the same time, the US was delivering desperately needed supplies to its allies in the Soviet Union and Great Britain. Many citizens offered their services to protect the country against invasion or bombing by the enemy.
The world's most extraordinary mobilization of an idle economy ever occurred as a result of America's response to World War II. 17 million new civilian jobs were generated during the war, industrial productivity rose by 96%, and corporation profits after taxes more than doubled.
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