Why was the balkan region referred to as the “powder keg of europe” prior to world war i? a. the aggression of the ottoman empire was disrupting the balance of power. b. yugoslavia was invading its neighboring countries. c. nationalistic and imperialistic rivalries were increasing. d. the area was the leading supplier of military equipment to the rest of the world.

The correct answer is C.

During this time, the Balkan Region is controlled by the Austrian-Hungary Empire. Even though they were all under the control of Austria-Hungary, there were many different groups who wanted to develop their own nations free from Austria-Hungary's rule. Conflicts between Serbia and Austria-Hungary lead to constant tensions between the two. Ultimately, the assassination of Archduke Franz Ferdinand resulted in this "powder keg" exploding, starting World War I.