|The theory that developed in the early 20th century that the universe was created from an explosion.
|The theory that developed in the early 20th century that the universe was created from an explosion.
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|[[Cold War]]
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|The Cold War took place in the mid 1900's between the U.S., its allies and the Soviet Union. The war didn't actually involve battles and no bullets were fired or bombs dropped. It mostly included espionage and tense moments where each side was waiting for the other to fire their missiles.