Step 1: Understanding the Concept:
Nations can fragment when different groups within a country demand separate states based on their unique ethnic or cultural identity.
Step 3: Detailed Explanation:
Yugoslavia was a multi-ethnic state in the Balkans.
After the end of the Cold War and the death of leader Josip Broz Tito, ethnic tensions rose.
Slovenia, Croatia, Bosnia-Herzegovina, and Macedonia declared independence based on their ethnic identities.
This process where ethnic identity leads to the creation of new states is called Ethnic Nationalism.
Step 4: Final Answer:
The emergence of new nations from Yugoslavia is a result of Ethnic Nationalism.