Which transportation breakthrough had the GREATEST impact on the economic development of the American frontier in the late-1860s?

asked Jul 26, 2019 186k views

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3 votes

Answer:

The transcontinental railroad

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Ababneh A answered Jul 29, 2019

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2 votes

Railroads, they allowed breakthroughs in trading and big business laws that limited what they could and could not do.

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