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The Allies invaded France and won the battle against Germany, signifying the first major offensive move that the Allies succeeded in.
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Roosevelt, Churchill, and Stalin met in the USSR to discuss the postwar occupation of Germany.
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The U.S. dropped the very first atomic bomb in Hiroshima, Japan, demonstrating a major sign of force.
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The U.S. once again drops an atomic bomb in Japan, this time in Nagasaki, trying to force Japan to surrender.
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Over 50 countries met in hopes that they would prevent another world war.
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The North Atlantic Treaty Organization was established by over 30 European and North American countries.
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A war between North and South Korea in which American troops became involved, attempting to stop North Korea and the further spread of Communism.
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The twenty-second amendment to the Constitution is passed, limiting the president to two terms.
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The united States passes the law to confirm Puerto Rico as an official American commonwealth.
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The very first hydrogen bomb is detonated by the U.S. in the Marshall Islands.