Puzzling history

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Across
  1. 4. when he told GB to stay out
  2. 6. abolishing of natives
  3. 8. groups of workers
  4. 11. when they compromised with Missouri
  5. 14. when he bought a lot of land
Down
  1. 1. Washington DC.
  2. 2. when there were major industrial advances
  3. 3. powers not listed in the constitution.
  4. 5. power to decide if laws are constitutional
  5. 7. first 10 amendments.
  6. 9. powers mentioned in the constitution.
  7. 10. big land
  8. 12. made the cotton gin
  9. 13. individuals head of a department.