Answer:
ethnocentrism.
Explanation:
Ethnocentrism: The term ethnocentrism was introduced by William Graham Sumner in 1906.
In sociology, the term ethnocentrism is referred to as the phenomenon in which an individual believes that his or her culture is comparatively better than that of someone else's culture. It often leads an individual to evaluate someone else's culture from his or her perspective.
In the question above, the given statement is an example of ethnocentrism.