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1. Communist Eastern Europe and democratic Western Europe were separated by an imaginary line. This line was known as the ____________________. a. b. c. d. Berlin Wall Iron Curtain Great Divide Chisholm Trail 3. In 1950, the United States and other countries from the United Nations became involved in the Korean War. What was the cause of this war? a. North Korea attacked China to spread communism. b. South Korea wanted to drive out troops from Vietnam. c. North Korea attacked South Korea to spread communism. d. South Korea attacked North Korea to spread democracy. 2. After World War II, the United States signed several treaties with foreign countries. These treaties called for the nations that signed them to protect each other, even if an enemy attacked only one of them. Which factor caused the United States to sign the treaties? a. the growing sense of trust between China and Soviet Union b. the growing threat of the former Soviet Union and world communism c. the outbreak of many revolutions in South America and Latin America d. the failure of United States troops to fight effectively in World War II 4. After World War II, tension between the United States and the Soviet Union escalated. Many feared this could lead to a nuclear war. What was this period called? a. b. c. d. the cold war the world crisis the Soviet scare the War on Terror 5. During the Cuban Missile Crisis, U.S. President ____ and Soviet leader ____ almost took the world into a nuclear war. a. b. c. d. 6. What was the Iron Curtain? Carter, Brezhnev Reagan, Gorbachev Johnson, Khrushchev Kennedy, Khrushchev 7. Why did the United States organize the Berlin airlift in 1948–1949? 8. Why did the United States help form NATO? 9. Stalin wanted the western allies out of Berlin. His army surrounded West Berlin and would not let nay supplies in or out. How did the United States continue to get supplies across Soviet lines? a. b. c. d. the Berlin airlift the Iron Curtain the Marshall Plan the Berlin bomber 11. Which of these was a cause of the Korean War (1950-1953)? a. South Korea invaded North Korea. b. North Korea blockaded goods from South Korea. c. South Korea became an ally of the Soviet Union. d. North Korea embraced communism while South Korea chose democracy. 10. During the 1950s, which U.S. senator became convinced that communists were trying to gain control of the U.S. government? a. b. c. d. Harry Truman John F. Kennedy Joseph McCarthy Nikita Khrushchev 12. Nikita Khrushchev was MOST known in the United States for his actions in which of these events? a. b. c. d. World War II Vietnam War the Cold War the Moon Landing