How did the civil war in Yugoslavia start?

when Slovenia and Macedonia left Croatia tried too but because of the WW2 history between Croatia and Serbia Milosevic didnt want his serbian people living in a country where the people in the 40s killed Serbs there were a lot of protests and when it was sure tha Croatia would leave Yugoslavia, Bosnia tried to leave too Both Serbia and Croatia wanted Bosnia and both attacked it from both sides in bosnia some fought for indepence, some for uniting with Croatia and the others for uniting with Serbia all three did the same atrocities but some more than others