Chapter 12 12.4

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Across
  1. 2. made the mechanical reaper and let customers buy products on credit
  2. 5. perfected telegraph device that could be sent over wires
  3. 6. improved Mccormick's design and was the biggest weing company in 1860
Down
  1. 1. designed steel plow
  2. 3. device that could send information over wires across great distance
  3. 4. different combinations of dashes that represent each letter of the alphabet