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The Japanese attack the U.S navy base at Pearl Harbor, Hawaii, destroying 188 aircraft and causing over 4,000 U.S casualties
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The United States declares war on Japan
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Started in 1939, active from 1942-1945, and disbanded in 1947, the Manhattan Project produced and tested the world's first atomic bombs.
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Stalin, Churchill, and Truman attend this conference to discuss the rebuilding and reorganization of Europe.
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Franklin D. Rooselevelt passes away and Vice President, Harry S. Truman becomes the 33rd President of the United States.
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The United States tests the first atomic bomb in New Mexico (operation codename: Trinity)
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The Potsdam Declaration called for the unconditional surrender of the Japanese and stated that if they did not surrender, it was subject to "utter destruction".
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Atomic bomb, codename; Little Boy, was dropped on Hiroshima, causing roughly 66,000 deaths and 69,000 injuries.
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The atomic bomb, codename; Fat Man, was dropped on Nagasaki causing roughly 44,000 deaths.
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It is agreed by many scientists that the cold war started rouhgly in 1947 and ended in 1989
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