Which economic impact was most likely the result of the map of the Transcontinental Railroad? a. eliminating overseas trade with Europe
b. expanding interstate commerce nationwide
c. decreasing the influence of big business
d. rapid building of the South after the Civil War

It seems like B is the answer

Explanation:

Connecting the two American coasts made the economic export of Western resources to Eastern markets easier than ever before. The railroad also facilitated westward expansion, escalating conflicts between Native American tribes and settlers who now had easier access to new territories.

I hope this helps

the answer is b.india