What impact did the railroads have on native america

Native Americans had signed away the rights to much of their land in treaties with the federal government, they likely never imagined that a disruptive and massive system like the railroad would be constructed through their traditional hunting grounds.

monopolies  came to the united states with the colonial administration. the large-scale public works needed to make the new world hospitable to old world immigrants required large companies to carry them out. these companies were granted exclusive contracts for these works by the colonial administrators. even after the american revolution, many of these colonial holdovers still functioned due to the contracts and land

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answer; i believe the correct answer is benjamin harrison;