Before Columbus: Native American cultures

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Across
  1. 4. Comanche and Arapaho used to herd Buffalo
  2. 8. sat in the Columbia and Fraser river basins at the intersection of the Subarctic, the Plains, the Great Basin
  3. 9. Where Christopher Columbus' ships landed
  4. 12. an expansive bowl formed by the Rocky Mountains to the east, the Sierra Nevada to the west
  5. 13. Sub Artic's primary means of transportation
  6. 14. tend to be rather aggressive and warlike
  7. 15. grew crops like corn, beans and squash
Down
  1. 1. infiltrated the California region in the middle of the 16th century
  2. 2. Indian Territory" (later Oklahoma) west of the Mississippi is called
  3. 3. What did the Inuit and Aleut lived in
  4. 5. United States purchased in 1867
  5. 6. cold, flat, treeless region
  6. 7. swampy, piney forests
  7. 10. U.S won it's independence from
  8. 11. main food in the region's river