As part of a territorial conflict in bosnia, ethnic croats expelled, imprisoned, or killed the muslim people to whom they had lived peacefully next door for more than five hundred years. this illustrates the concept of:

it is a ethnic and nationalist conflict but religious conflict as well. So we have three conflicts at the same time and all these three conflicts were also historical confict because Croats (nation, Catholics) and Muslims (not always Arabs, religiously Muslims and not Catholics) coexisted in the western Balcans for centuries.

Explanation: Muslim invasion to Balcans (Serbia and Croatia) started already in Middle Ages so this coexistence is historical fact that started with medieval Muslim Conquest. Establishment of Yugoslavia and later (after the WW II) communist Yugoslavia (marchal Tito) conserved and surpressed nationalist and religious or ethnic conflict. After the fall of communism old conflicts re-emerged.

the 2nd option is the answer

answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;