The History of Agriculture

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Across
  1. 2. The _______ Crescent
  2. 4. Dogs helped rounding them up
  3. 5. Humans used these for farming
  4. 7. To water a plant at needed intervals
  5. 9. The word used to estimate time
  6. 10. Was soon made steel in the 1850's
Down
  1. 1. Domesticated horses in 2000 BCE
  2. 3. Found in Celtic regions in 200 BCE
  3. 6. Part of the Fertile Crescent
  4. 8. The whole point to this puzzle