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manual labor

Jobs done by hand without the help of machines; how work was done in the early 1800's.


Using machines to do work; people began inventing machines to help.

Cyrus McCormick

Invented the mechanical reaper used to cut grain.

threshing machines

Run by steam, separated grain from plant stalks.

L.O. Colvin

Developed the first milking machine for cows.

Gustav de Laval

Invented the cream separator to separate cream from milk in minutes.


Allowed workers to produce more product in less time.

cash crops

Farmers were able to produce __________ _________ instead of just using a farm to provide food for their families.

cash crops

Crops sold by farmers to raise money

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