Manifest Destiny: Expansion of a Nation Crossword Puzzle

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Across
  1. 2. Young
  2. 4. Austin
  3. 6. Trail
  4. 7. of Guadalupe Hidalgo
  5. 10. Destiny
  6. 12. O’Sullivan
  7. 13. Houston
  8. 15. Revolution
  9. 18. Compromise
  10. 19. Trains
  11. 21. Rush
Down
  1. 1. Railroad
  2. 3. Acts
  3. 5. Pike
  4. 8. War
  5. 9. K. Polk
  6. 11. of Tears
  7. 14. Purchase
  8. 16. Jackson
  9. 17. Jefferson
  10. 20. Purchase