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_____________ allowed people to travel all across the United States. From East to West and North to South, people were traveling all over the US. In fact...41,000 miles were built total!

User Dividius
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2 Answers

7 votes
Railroads, walking, and horses
User Vladimir Bershov
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If the subject this is on is refers to pre(before)-Vehicle(like cars and trucks) era, then the answer is railroads.
User Jimmy Koerting
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