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1834
Cyrus McCormick patented the mechanical reaper -
1831
The reaping of grain was vastly improved with the mechanical reaper. Before the mechanical reaper, reaping by hand limited farm size and food supply -
1840s
With this invention, there would be less farm hands needed, which made people flock to the city to work in factories in the expanding Industrial Revolution. -
1848-1857
In 1848 his factory made 500 reapers; in 1851 it produced a thousand; by 1857 it was turning out 23,000.