Answer:
RACIAL OR ETHNIC STRATIFICATION.
Explanation: Ethnocentrism is a belief that one's own ethnic group or ethnic tradition is more superior than others.
Noel Hypothesis is a theory that describes the developer of dominance traits and subordinate traits between a group of persons as a result of the interaction taking place between the two groups of persons.
According to Noel Hypothesis there are three factors that influence the outcome of the interaction taking place between groups of people they include;
(1) ETHNOCENTRISM
(2) COMPETITION
(3) DIFFERENTIAL IN POWER.