Answer:
caste system
Explanation:
Based on the scenario being described within the question it can be said that this is an example of a caste system. This is a system created by the Aryans that invaded South Asia. This system focuses on controlling the population by defining specific economic and social classes/roles within the society and placing individuals in a certain class at birth, based on different notions of purity. This system was later used in the U.S to segregate African American individuals.