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1. One of the most important factors for immigration from Europe to the United States was religious persecution, especially in the initial period of colonization. Later hunger would be one of the main motivators. Letter D.
2. Nativism promoted the idea that it was necessary to make immigrants Americanized, that is, to remove their cultural and identity burden from them and impute to them American principles, making them Americans by imposition, restricting the nationalities that could be applied. Letter D).