Scholars have argued that immigrant groups like the Irish and Italians were initially considered a race apart from native-born Anglo-Saxon white Americans. However, over the course of the nineteenth and twentieth centuries, Irish and Italian immigrants managed to become part of dominant white culture.

This historical context reveals how different cultures are absorbed into a single mainstream culture, a process also known as:

a. multiculturalism

b. apoliticism.

c. ethnocentrism.

d. assimilation