BLOOP275 BLOOP275

15-09-2015
History

contestada

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

Respuesta :

HistoryGuy HistoryGuy

30-09-2015

"crossing the Sierra Nevada mountains" would be the best option, since the technology that allows us to do this today did not exist back then and it was much easier to bridge rivers than to cross mountains.

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kdeleo3 kdeleo3

03-01-2022

Answer:

Probobly D crossing the Sierra Nevada Mountains

Explanation:

I Mean it makes the most sense to me

Answer Link

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