2. Yugoslavia

Yugoslavia was born from the ashes of World War I, uniting a patchwork of South Slavic cultures and religions under one flag. For much of the 20th century, it stood as a unique experiment in coexistence and socialism. However, ethnic tensions and civil war tore it apart in the 1990s, giving rise to independent nations like Serbia, Croatia, and Bosnia. The legacy of Yugoslavia’s fragmentation continues to shape the Balkans today. Read more about its complex history at BBC.