Question

1. Which is not an accurate description of the role nationalism played in causing World War I?

It provoked the assassination of Archduke Franz Ferdinand.
It encouraged European nations to expand their empires.
It fueled rivalries between European nations.
It united Europe against the Ottoman Empire.

Answer 1

I think the answer is, it united Europe against the Ottoman Empire.

Europe did not unite to fight the Ottoman Empire. The empire doesn't have enough strength to sustain the fight and conquer all of Europe. The states in Europe had their military army for their protection.