The break up of Yugoslavia had a variety of conflicts happening simultaneously beginning in the early 1990's. Yugoslavia's territory consisted of Slavs, Slovenes, Serbs, Croats, Bosniaks, Albanians, and more. For decades the vastly diverse cultures co-existed under oppression and authoritarianism by the Ottoman Empire/a ****** kingdom/totally barbaric Croatian fascist regime (so insane Hitler and the Nazi's were taken back their brutality)/and a communist regime which began faltering by the mid-1980's. This set the stage for a break up into smaller states, but border disputes combined with political nut jobs and ethnic hatred lead Yugoslavia, the 3rd largest military in Europe, to dive into a complicated civil war.
I dislike oversimplification of conflicts since there are so many shades of grey and for the most part, there were no "good guys" or "bad guys" since all parties involved were terrible and committed crimes against humanity including death squads, concentration camps, and forced eviction and expulsion based on ethnic background. I will say the Bosnian Serbs were huge D-bags and with the support of the Serb military apparatus (since Serbia arguably had the largest military muscle), but that doesn't make the other groups saints by any means.
Watch "Death of Yugoslavia" on YouTube if interested, its a great 6 part series on the conflict.
