history crossword puzzle

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Across
  1. 3. arkansas's largest spring
  2. 6. severe natural disaster
  3. 7. raft like vehicle that could only float downstream
  4. 8. private explorer that was a scientist
  5. 10. explored the arkansas river to fort smith
Down
  1. 1. thought there was witchcraft
  2. 2. type of land that made a problem for explorers
  3. 4. a name used for fever and chills
  4. 5. credit for buying the louisiana purchase
  5. 9. private explorer that was a doctor