America's Geographic Identity - Our boundaries today are based off of early events

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Across
  1. 2. what did Natives give them to help them traverse the mountains that heavily helped their expidition?
  2. 3. What type of agriculture did they discover (Hint: C, 1/3)
  3. 4. What did Louis and Clark discover that would pose a great threat to people traveling by river?
  4. 7. Which state from the Louisiana Purchase is Missing from this list? Missouri, Arkansas, Iowa, North Dakota, South Dakota, Nebraska, and Oklahoma
  5. 9. What type of agriculture did they discover (Hint: S, 3/3)
  6. 11. What type of knowledge to aid other settlers did Louis discover? (Hint Z, 2/2)
  7. 13. What native aided Louis and Clark with translation?
  8. 14. What did Louis and Clark travel on to overcome the challenge of the waterfalls?
  9. 15. Who else explored the Louisiana Purchase? (Hint: Z)
  10. 17. Who was Sacagawea's husband that also helped decipher the messages?
Down
  1. 1. What type of fish did Louis discover? (Hint: W)
  2. 5. Who explored the Louisiana Purchase?
  3. 6. How many states were involved in the Louisiana Purchase?
  4. 8. What did Louis and Clark mythbust that would encourage more settlers to roam westward? (Roaming _____)
  5. 10. What type of knowledge to aid other settlers did Louis discover? (Hint: B, 1/2)
  6. 12. What did Clark make that would help future travelers going westward?
  7. 16. What type of agriculture did they discover (Hint: B, 2/3)
  8. 18. What type of bird did Louis discover? (Hint: B)