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  in the first two years after the end of the Second World War in 1945.
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  United States announces turman doctrine and marshall plan
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  It is often said that the North Atlantic Treaty Organization was founded in ... much discussion and debate, the North Atlantic Treaty was signed on 4 April, 1949
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  new military alliances spread to the rest of the world after the u.s.a became involved in the korean war
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  The war in the air, however, was never a stalemate. North Korea was subject to a massive bombing campaign. Jet aircraft were used in air-to-air combat for the first time in history, and Soviet pilots covertly flew in defence of their Communist allies
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  Civil Rights Movement encompasses social movements in the United States whose goals were to end ...