In the 19th century, as the Ottoman and Austro-Hungarian Empires began to wane, a fervent sense of national identity took root across the peninsula. Unlike the civic nationalism seen in Western Europe, Balkan nationalism was deeply tied to ethnicity, religion, and historical memory.

The Powder Keg Re-examined: Nationalism, War, and the Great Powers

viewed Balkan nationalism as an existential threat to its multi-ethnic empire.

maneuvered to maintain the "Balance of Power," often propping up a failing Ottoman Empire to block Russian expansion.