After the completion of the railroad, a major industry in the west was ranching. banking. milling. fishing.

After the expulsion of Native Americans from Western territories the railroad industry was one of the most profitable industries until the late 19th century. Thanks to the railroad, ranching became a lucrative activity as well because it was possible to connect distant ranches with the main cities and ports, which increased the supply of vegetables and meat in the market.

it further strained relations between the north and the south and convinced

the answer is d trust me