The term "Balkanization" refers to the system of segregation by ethnicity and race within a border.

the process of ethnic cleansing of a majority by a minority.

the creation of a multiethnic nation-state.

the phenomenon of white flight from inner cities.

the process by which a state breaks down through ethnic conflict.

the process by which a state breaks down through ethnic conflict.

Explanation:

Balkanization first occurred as the name suggests, in the Balkans. Take a look  at a map of Europe and you'll see what I mean. This isn't to say that multiple ethnicities can't coexist, it's saying that when lack of representation is present then you better expect a bad outcome.

letter a is the answer

answeramicable; (friendly);