2. What brought the flood of migrants to the West in the late nineteenth century?

It was mainly for work, and because many believed that California was the city of gold. Also because when the British reached Africa, they made them go to the US to work and do labour for free.

Explanation:

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p.s. can u pls make me the brainliest answer

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain