Answer:
The answers to the two issues that have most caused division when it comes to Eastern European nationalism have been: Ethnicity and culture.
Explanation:
The answer to this question comes from understanding the history and origin of the Balkan nations, all of which are characterized by the immense differences between their people, and especially the prevalence of ethnic and cultural minorities within the now established nations, which have led to huge bouts of ethnic and racial cleansing. Almost from the very beginning in the Balkans, there has been conflict among the different ethnic groups and cultures that exist there. Examples of this are Chechnya, Bosnia and Serbia. All of these nations are characterized by the amalgamation of ethnic minorities and cultures against which the established governments have fought, and caused huge ethnocides that have been shuned and punished by various world organizations like the U.N.
