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apr 3, 1949 - Soviet Union tests atomic bomb

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In 1949, the Soviet Union tested their first atomic bomb. This created a doubt in the American postwar confidence. This led President Harry Truman to order American scientists to start working on the hydrogen bomb.

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ByAlexis Romero binuelo
19 Feb 2018
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Date:

apr 3, 1949
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~ 76 years ago
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