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First major international crises of the cold war
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When the Soviet Union and communist people founded a alliance
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When the communist promoted the United States and 11 other western countries
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The first artificial earth satellite that was on a low earth orbit and gave information about the ionosphere
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Separated eastern berlin from western berlin
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A 13 day confrontation between the United States and the Soviet union which almost escalated to a nuclear war
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The landing of a spacecraft on the surface of the moon
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It divided berlin from 1961 to 1989
