The breakup of Yugoslavia. Slovenia, Croatia, Macedonia, Bosnia and Herzegovina, Montenegro appear from Yugoslavia. Patreon: . 1 Minute Animation - The breakup of Yugoslavia - Countryballs 1 Minute Animation The breakup of Yugoslavia. Slovenia, Croatia, Macedonia, Bosnia and . Why did Yugoslavia split up? In this video, I attempt to look at the complex situation of the former Yugoslav republics and what led to their breakup. See how as Yugoslavia collapsed, multiple wars and new nation-states arose.