Example of a multistate nation in Yugoslavia

The answer is below

Explanation:

A multinational state is a sovereign state that comprises two or more nations or states. A multinational state can or cannot be multicultural or multilingual. A nation with multi states may lead to irredentism where members claim, reclaim, and seek to occupy territory which they consider lost, on the basis of history such as that seen in countries like Nigeria.

Examples of multinational states are Afghanistan, Nigeria, Yugoslavia.