Why did nationalist tensions emerge in the Balkans?

Solution:

Nationalist tensions emerged in the Balkans because of the spread of ideas of romantic nationalism as also the disintegration of the Ottoman Empire that had previously ruled over this area. The different Slavic communities in the Balkans began to strive for independent rule. They were jealous of each other and every state wanted more territory, even at the expense of others. Also, the hold of imperial power over the Balkans made the situation worse. Russia, Germany, England, Austro-Hungary all wanted more control over this area. These conflicts ultimately led to the First World War in 1914.