Which transportation method played the greatest role in the industrial revolution that occurred in america after the civil war?
a) railroads
b) the airplane
c) the steamboat
d) interstate highways

A: Costs of products also decreased because of railroads. Population increased because food was available in a large variety at a low cost. The entire Industrial Revolution was altered because of these accomplishments. Factories flourished because the demand for railroad parts and railroad tracks was very high.

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