How was the issue of slavery addressed between 1820 and 1850

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Across
  1. 1. highest court in the US-used for
  2. 5. southern states left the Union
  3. 6. political & economic power of south
  4. 9. symbolic dividing line N & S
  5. 11. people vote
  6. 12. individual states retain power
  7. 14. limitation imposed by another item
Down
  1. 2. reps that vote for pres and vp
  2. 3. someone who argued no slavery
  3. 4. areas not states
  4. 7. reject a decision or proposal
  5. 8. annual value ofproducts&services
  6. 10. geographical north and south
  7. 13. system that appoints the Pres&VP