Yugoslavia used to be one of many socialist republics formed at the end of World War II. This one resembled the USSR the most due to its ethnic diversity. Serbs, Croats, Slovenes, Bosniaks, Albanians and Macedonians had tried to co-exist under the "slavs are brothers" narrative. However, by the 90s it had faded away completely. That's how Breakup of Yugoslavia started.
