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The U.S. detonated two nuclear bombs on Hiroshima and Nagasaki. This killed between 129,000 and 226,000 people.
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The Marshall Plan was a recovery program made by the U.S.. It provided more than $15 billion to help fiance rebuilding efforts on the continent.
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One of the first international crises of the Cold War. The Soviet Union blocked the Western Allies railway, road, and canal access to the sectors of Berlin under Western control.
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The Korean War was between North Korea and South Korea. South Korea had the united nations support and North Korea had the support of China and the Soviet Union.
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It was the first detonated hydrogen bomb test. Which deemed to be a successful full-scale thermonuclear weapon explosion.
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North Korea, China, and the United States signed an armistice agreement. But South Korea objected to it, so however the fighting stopped, the war never truly did.
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The Warshaw Pact was a collective defense treaty established by the Soviet Union. As well as seven other Soviet satellite states.
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It was the Hungarian Uprising and the Soviet invasion of Hungary. Which was a nationwide libertarian revolution against the Hungarian People's Republic and its Stalinist Soviet-imposed policies.
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Sputnik was the first artificial Earth satellite which was launced by the Soviet Union. It orbited for three weeks before it died, went silent for 2 months, and then fell back in the atmosphere.
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When Cuba joined the communist party. This was to be celebrated as the Day of Revolution for Cuba.