Perfect 10 Crossword Puzzle

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Across
  1. 2. A person who leaves their land of origin
  2. 3. In addition
  3. 5. The idea that God wanted the US to possess the whole continent
  4. 6. A meeting
  5. 7. Polk Whig's opponent
  6. 9. The trail people took to immigrate to Oregon
  7. 10. Two or more people who occupy a territory
  8. 11. To get to
Down
  1. 1. A treaty the US made with Spain
  2. 4. Canvas covered wagons
  3. 8. People who spent much time in the mountains