The United States did not just enter the war they enter ther war after the japanese bombed the American fleet in Pearl Harbor, Hawaii, on December 7, 1941. and also if you wanted to know the world war ll was <span>(1939-1945)
hoped i helped
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The destruction of the Japanese cities of Hiroshima and Nagasaki by American atomic weapons in August 1945 began an arms race between the U.S. and the Soviet Union during the Cold War.
