In a city on the east coast, organized crime was dominated by an italian "family," but they were eventually displaced by african americans. this would be an example of:

Ethnic succession

Explanation:

Ethnic succession theory is a theory in sociology which states that ethnic and racial groups who enters into a new community or area may settle in older neighborhoods or urban places until they achieve economic parity with certain economic classes And so organized crime was dominated by Italian family, but as they were displaced already by Italian American.

the correct answer is d