When did Yugoslavia change?

Yugoslavia underwent significant changes in the early 1990s, primarily when it began to disintegrate into separate nations following the end of the Cold War. The process started with Slovenia and Croatia declaring independence in June 1991, followed by other republics like Bosnia and Herzegovina and Macedonia. The ensuing conflicts, known as the Yugoslav Wars, further accelerated the fragmentation, leading to the official dissolution of Yugoslavia by 2003, when the State Union of Serbia and Montenegro was formed.