Important element of American history in the development

In a 500-700 word APA formatted paper:- define racism, ethnocentrism, prejudice, nativism, xenophobia, groupthink, prestige, hierarchy, and discrimination.- examine how this is an important element of American history in the development of a diverse culture, while at the same time increasing social distance.- include a description of how Affirmative Action has reformed some discrimination & racism in the U.S., while enhancing social distance.- align your findings with Structural Functionalism, Conflict Perspective, and/or Symbolic Interactionism. (Note: do not just copy Parillos findings)