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Which describes a major challenge facing the builders of the transcontinental railroad? A. bridging the Rio Grande River B. spanning the Grand Canyon C. tunneling under Lake Eri…

Which describes a major challenge facing the builders of the transcontinental railroad? A. bridging the Rio Grande River B. spanning the Grand Canyon C. tunneling under Lake Eri…
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1 vote
Which describes a major challenge facing the builders of the transcontinental railroad?

A. bridging the Rio Grande River

B. spanning the Grand Canyon

C. tunneling under Lake Erie

D. crossing the Sierra Nevada mountains

asked
User Dennis Huo
by
8.0k points

2 Answers

4 votes

Answer: the answer is A bridging the rio grande river

Explanation: wherefore the answer is A

answered
User Powderham
by
7.6k points
5 votes
Crossing the Sierra Nevada Mountains would be your answer. Answer: D.
answered
User Saggio
by
8.1k points
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