1. The split of the Austro-Hungarian Empire-- this empire split due to many ethnicities living in the empire with differing beliefs. Nationalism caused cultural groups to come together and demand independence to create nation-states.
2. The fall of the Communist government in Yugoslavia-- Yugoslavia contained many groups such as Bosnians, Serbs, Slavs, and other minority groups. After the communist bloc began to fall, groups suppressed by the communists governments began new nationalistic movements to create their own countries once again.