Please help me What made the railroad expansion possible because thousands of miles of track were made of this? A. oil B. copper C. gold D. steel

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asked Sep 21, 2019 2.0k views

4 votes

Please help me

What made the railroad expansion possible because thousands of miles of track were made of this?

A. oil

B. copper

C. gold

D. steel

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high-school

Betamoo asked

by Betamoo

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1 Answer

4 votes

The answer is D. Steel.

Mahdi Younesi answered Sep 25, 2019

by Mahdi Younesi

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