Final answer:
The Balkan countries are a group of nations located in the Balkan Peninsula in southeastern Europe. They have a shared history of ethnic and religious diversity, as well as conflicts and political changes. The breakup of Yugoslavia in the 1990s led to the formation of several independent Balkan nations.
Step-by-step explanation:
The Balkan countries refer to a group of countries located in the Balkan Peninsula in southeastern Europe. These countries include Romania, Serbia, Bosnia and Herzegovina, Montenegro, Kosovo, North Macedonia, and Albania. They have a shared history of ethnic and religious diversity, as well as conflicts and political changes. The breakup of Yugoslavia in the 1990s resulted in the formation of several independent Balkan nations.