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The planet with the longest year is
Soviet Union
A former federation of communist republics that was established in 1922 and dissolved in 1991, officially known as the Union of Soviet Socialist Republics (USSR).
Atomic Bomb
A weapon of mass destruction that uses nuclear reactions, either fission or a combination of fission and fusion, to release a large amount of energy.
Diplomatic Records
Official documents that record the communications, agreements, and negotiations between diplomatic representatives of different nations or groups.
Soviet Expansion
The period of geopolitical strategy during the Cold War where the Soviet Union sought to spread its influence and control over additional territories.
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