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Across
  1. 3. 1969 music festival
  2. 4. Underground Railroad conductor
  3. 6. Light bulb inventor
  4. 8. Japanese internment case
  5. 12. Bloodiest Civil War day
  6. 16. Ended Cold War
  7. 18. Four-term president
  8. 19. Interstate highways
  9. 21. Space Race start
  10. 22. Island immigration station
  11. 23. Express mail service
  12. 24. Dropped atomic bomb
  13. 25. Lost Colony
Down
  1. 1. WWII battle
  2. 2. Rides for civil rights
  3. 5. Railroad for slaves
  4. 7. Evolution trial
  5. 9. Revolution turning point
  6. 10. Act colonial protest
  7. 11. Turning point battle
  8. 13. Established judicial review
  9. 14. First moonwalker
  10. 15. First political party
  11. 17. Vietnam peace talks
  12. 20. Post-WWII alliance