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Across
  1. 1. Civil rights figure
  2. 3. Moon quest
  3. 4. WWII weapon
  4. 5. Post-Civil War
  5. 6. 1770 clash
  6. 7. Alcohol ban
  7. 10. Economic slump
  8. 11. 1930s drought
  9. 15. 60s conflict
  10. 17. 1948 operation
  11. 18. Nuclear tension
  12. 20. Failed invasion
Down
  1. 2. Jazz Age
  2. 8. WWI end
  3. 9. 50s conflict
  4. 12. Division
  5. 13. Segregation policy
  6. 14. 1776 war
  7. 16. Nixon scandal
  8. 19. 1849 migration