1950s/cold war

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Across
  1. 3. German city at the center of a major cold war blockade crisis
  2. 5. large increase in births after world war II
  3. 6. underground space
  4. 9. First artificial satellite launched by the Soviet union
  5. 10. Highway system that improved travel in the US for defense and convenience
Down
  1. 1. underground space built for protection from nuclear attacks
  2. 2. Group of filmmakers blacklisted for refusing to testify
  3. 4. General who commanded US forces in the Korean War
  4. 7. couple executed for passing atomic secrets to the soviets
  5. 8. US policy aimed at stopping the spread of communism