In general, yes, immigration during 1830s to 1840s was vital to the industrialization of America, since it was mostly immigrants who first sought employment in the factories that were an essential element of industrialization.
I have done some studying and I believe its tribalism.
I hope this helps :)
Freed slaves who wanted land available under the homestead act still faced the challenge of intense racism and segregation--meaning that they faced persecution and violence from whites who were in competition over the land.
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According the the Homestead Act of 1862, the only two valid answers are A. Settlers had to promise to avoid contact with American Indian tribal lands and D. Settlers had to improve the land (e.g., by buying a house) to keep it.
