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History, 22.08.2019 08:00 Karumbafaith

Which describes a major challenge facing the builders of the transcontinental railroad?
a.
tunneling under lake erie
b.
crossing the sierra nevada mountains
c.
spanning the grand canyon
d.
bridging the rio grande river

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Answers: 1

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Which describes a major challenge facing the builders of the transcontinental railroad?
a.
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