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  World War II ends in Europe
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  The Truman Doctrine was announced.
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  The North Atlantic Treaty Organization was established.
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  Western leaders organized the Berlin airlift.
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  North Korea attacks South Korea. The South wins.
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  The United States tested the first fusion-powered hydrogen bomb
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  First artifical satellite launched.
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  Confrontation between the United States and the Soviet Union over the instullation of the Soviet nuclear missiles in Cuba.
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  U.S. and China establish diplomatic relations.
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  George Bush and Mikhail Gorbachev agree to the reunification of Germany in 1994
