Who constructed the transcontinental railroad?

it was constructed by the "Big Four" which contained Leland Stanford, Collis P. Huntington, Mark Hopkins, and Charles Crocker.

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gold discovery in california, and pioneer settlers were sometimes pulled west because they wanted to make a better living. others received letters from friends or family members who had moved west. these letters often told about a good life on the frontier. the biggest factor that pulled pioneers west was the opportunity to buy land.

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