ソビエト連邦が崩壊した原因は何
The Cold War emerged by 1947 as the Eastern Bloc, united under the Warsaw Pact in 1955, confronted the Western Bloc, united under NATO in 1949. On 5 March 1953, Stalin died and was eventually succeeded by Nikita Khrushchev, who in 1956 denounced Stalin and began the de-Stalinization of Soviet society through the Khrushchev Thaw. The Soviet Union took an early lead in the Space Race, with the first artificial satellite, the first human spaceflight, and successfully launched the first and so far the only probe to planet Venus. Dissatisfied with Khrushchev's policies, the Communist Party's conservative wing led a coup d'état against Khrushchev in 1964, quietly ousting him without any bloodshed. In the early 1970s, there was a brief détente of relations with the United States, but tensions resumed with the Soviet–Afghan War in 1979. In the mid-1980s, the last Soviet premier, Mikhail Gorbachev, sought to reform and liberalize the economy through his policies of "glasnost" (openness) and "perestroika" (restructuring). Under Gorbachev, the role of the Communist Party in governing the state was removed from the constitution, causing a surge of severe political instability to set in. In 1989 Soviet satellite states in Eastern Europe overthrew their respective communist governments.
Cold War