Answer:
Assimilation in America is something that always existed.They were heterogeneous country since ever.
Explanation:
Many nationalities, religions, regions in one place. Assimilation derives from a Latin word that means to be similar. Nowadays assimilation in America is connected with immigrants.
From them is exected to assimilate and become like Americans, to meet with them in every aspect. Assimilation can be partial, as accepting the language and knowing the background of one culture. The other way of assimilation is a complete one, where people are giving up all their connections with the previous culture and accepting a new one.