Political and economic reasons: During the period of the development of the atomic bomb, the Allied troops were planning to launch a combined offensive against the Empire of Japan. The Soviet Union sought control in the governance of Korea and Manchuria in exchange for entering the war against Japan after the defeat of Germany. When President Truman heard about the successful testing of the atomic bomb, he was involved in a discussion with the Soviets …showed first 75 words of 288 total…

…showed last 75 words of 288 total…islands and boost their own economy. Another reason was the actual use of the bomb itself. American scientists, led by Oppenheimer, had done a great job in building the bomb but all the calculations about its use and destructive power were done on a test site. A successful deployment of the bomb would prove to the world that it was for real and give the American military supreme confidence in further advancement of this technology.