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

2 Answers

3 votes

Answer:

The transcontinental railroad

Step-by-step explanation:

i got it correct

User Ababneh A
by
8.8k points
2 votes

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

User Kyle Undefined
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