World War II - Global conflict fought between 1939-1945., Soviet Union - Original name for Russia and its surrounding territories from 1922-1991., Communism - Political theory derived from Karl Marx involving a society in which all property is publicly owned and each person works and is paid according to their abilities and needs., Democracy - System of government decided by the whole population or all the eligible members of a state, typically through elected representatives., Cold War - A period of geopolitical tension between the United States and the Soviet Union and their respective allies between 1945 and 1991., Duck and Cover - A 1952 American civil defense film that provided safety instructions in the event of a nuclear bomb explosion. , Hydrogen Bomb - A thermonuclear weapon that utilized both atomic fission and nuclear fusion to create an explosion hundreds to thousands of times more powerful than an atomic bomb., National Security - The security and defense of a nation state, including its citizens, economy, and institutions, which is regarded as a duty of government., Nuclear Blast - An explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction., Propaganda - Information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view., Satellite - An object, typically a spacecraft, placed into orbit around a celestial body., Sputnik - The first artificial Earth satellite launched by the Soviet Union on 4 October 1957 as part of the Soviet space program.,

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