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The Manhattan Project was the United States' research and development project to begin the production of atomic and nuclear weapons.
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Operation Overlord ("D-Day") was the Allies' attempt to retake the Northern part of France back from Germany. Over 150 thousand Allied men were sent from England in landing craft, boats, and other means of transportation across the English Channel to invade France by sea. The invasion would be a massive success with the Allies eventually driving out the Germans and resecuring France.
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Harry Truman is inaugurated President.
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Germany surrenders, ending World War II on the European front.
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The United States drops an atomic bomb on Hiroshima, a large city in Japan, in an effort to get them to surrender. This would mark the first time an atomic weapon would be used in war.
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Japan surrenders, marking the official end of World War II.
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Just three days after the Hiroshima bombing, the United States would drop another atomic bomb on Nagasaki, another large city in Japan. The combination of the two bombings would eventually cause Japan to surrender.
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The Korean War was a conflict that started when North Korea invaded South Korea. The Soviet Union would support the North Korean effort while the United States would support the South Koreans. The war ended with a stalemate and the signing of the Korean War Armistice Agreement.
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Dwight D. Eisenhower is inaugurated President.