The mechanical reaper, invented by Cyrus McCormick in the 1830s, was most significant because it
SAT · US History · previous-year question
- A.turned over the hard prairie soil.
- B.planted seeds four times as fast as a man could do by hand.
- C.aided irrigation of the arid Midwest.
- D.increased cotton production.
- E.cut wheat at a greater rate than the scythe.
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