Final answer:
Racial superiority is a belief that one's race or culture is superior to others and has impacted the treatment of various ethnic groups in American history.
Step-by-step explanation:
Racial superiority is a belief that one's race or culture is superior to others. This belief has had an impact on how Anglo Americans have treated various ethnic groups throughout American history. For example, Native Americans, Chinese, and Irish people were subjected to discrimination, marginalization, and even violence due to the belief in racial superiority.