How did the railroads affect the nation’s economy?

Every year, railroads save consumers billions of dollars while reducing energy consumption and pollution, lowering greenhouse gas emissions, cutting highway gridlock and reducing the high costs to taxpayers of highway construction and maintenance. Freight railroads mean more jobs and a stronger economy.

Explanation:

Yes

it helped people travel thru the us and deliver food resources it helped a lot even today we use railroads for trains

b is the answer i am assuming