01 Which region was considered the most serious source of nationalist tension in Europe?
Answer and explanation
Correct answer: A. Balkan region
Explanation: The governing historical concept is the connection between ethnic diversity, weakening empires and nationalist rivalry. The Balkans contained many communities seeking political autonomy, while the decline of Ottoman control and competing interests of major powers intensified the disputes. Option A is correct. The other regions had their own histories, but they were not identified in this context as Europe’s principal centre of explosive nationalist tension.