Three specially constructed cities in Tennessee, New Mexico, and Washington state served as the headquarters for the program that created the first nuclear weapons during World War II.
An overview of World War 2.
World War II, also known as WWII, was a global conflict that raged from 1939 to 1945. The vast majority of the world's nations—including all the great powers—formed the Allies and the Axis powers, two military alliances that opposed one another. More than 100 million soldiers from more than 30 nations were directly involved in World War II as a whole.
The distinction between civilian and military resources was muddled as the major warring parties threw their entire economic, industrial, and scientific capacities behind the war effort. The only two nuclear weapons ever used in war were deployed and strategic bombing of population centers was made possible thanks to aircraft.
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