Which of the following has been mentioned by historians as a cause of world war i? nationalism in the balkans militarism of african nations fighting between india and pakistan an unprovoked attack on the u. s.

Nationalism in the Balkans

Explanation:

World War I had many causes. Among them was the growing nationalism in many areas of the world. Peoples of the Balkan Peninsula, for example, experienced a surge of nationalism in the years before the war. Many areas of the Balkans were under the control of large empires, including the Ottoman and the Austro-Hungarian empires. The people of the Balkans believed that they should be able to govern themselves and began to fight against the rule of the controlling empires.

c

explanation:

thomas jefferson is the answer