4th hour agriculture in the north

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Across
  1. 2. Growing this became profitable after McCormick’s invention was created
  2. 4. This general area turned to farming due to fertile soil and good weather
  3. 5. This is who created the steel-tipped plow(2)
  4. 6. A treeless valley west of Missouri, Iowa, and Minnesota
  5. 9. A system of transportation that gave farmers access to new markets
Down
  1. 1. Cyrus McCormick’s inventions(2)
  2. 3. This is where Cyrus McCormick was born
  3. 4. This is what farmers used befor McCormick’s invention was created
  4. 7. This general area turned away from farming to to soil that wasn’t fertile
  5. 8. The surface of the ground