Assimilation occurs when an immigrant
a. learns to speak the host country's official language
b. spreads his or her native culture to the host country
c. experiences little or no discrimination in the host country
d. dresses like others of his or her age group
e. moves into an ethnic enclave within the host country

it is a : )

assimilation is the work of taking in and understanding information or ideas to the fullest of understanding

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

missouri compromise of 1820 which prohibited slavery