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Soviet Union blocked the western allies railroad and canal access to the sectors of Berlin
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THe North Atlantic Treaty Organization
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Collective defense treaty signed in Warsaw
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First artificial earth satellite that was launched into space by the Soviet Union
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German authorities built a wall that totally encircled West Berlin
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13 day confrontation between the U.S. and the Soviet Union
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Apollo 11 was the spaceflight that landed the first two humans on the moon
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Citizens were free to cross the country borders
