Think about what you’ve learned about the role of railroads in helping make resources available. Check all of the statements that are true.

Railroads connected people and businesses to resources in places that had been difficult to reach, so they helped Americans access new sources of raw materials. As transportation expanded, cities grew into manufacturing centers where natural resources could be processed. Building and operating trains also required large amounts of materials, creating more demand and helping related industries grow; therefore, A is false.

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