Which transportation breakthrough had the GREATEST impact on the economic development of the American frontier in the late- 1860s? A) the Erie Canal B) the automobile C) the interstate highway system D)

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asked Sep 23, 2021 78.4k views

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

1860s?
A)
the Erie Canal
B)
the automobile
C)
the interstate highway system
D)
the Transcontinental Railroad
Eliminate

History
middle-school

Heymega asked

by Heymega

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Answer: D) the transcontinental railroads eliminate

Step-by-step explanation:

Fernando Neira answered Sep 29, 2021

by Fernando Neira

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