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Across
  1. 4. Sank in 1912
  2. 10. Nixon scandal
  3. 11. Doubled U.S. size
  4. 12. Rock school integration
  5. 13. Lincoln freed slaves
  6. 15. Fifth president
  7. 17. Address by Lincoln
  8. 21. WWII Allied conference
  9. 23. 16th president
  10. 24. Island prison
  11. 25. Rebellion over taxes
Down
  1. 1. Resigned president
  2. 2. Cemetery dedication
  3. 3. Civil War siege
  4. 5. Compromise of 1820
  5. 6. Second atomic bomb
  6. 7. 1620 Pilgrims
  7. 8. Wrote Federalist Papers
  8. 9. 1807 trade ban
  9. 14. Project for atomic bomb
  10. 16. Debated Lincoln
  11. 18. Age of industrialization
  12. 19. Niners gold rushers
  13. 20. March for voting rights
  14. 22. Rebellion of 1786