Which best explains the role of nationalism in europe following the congress of vienna?

Hello there,

Your correct answer to this question would be "Resisting Napoleon's armies prompted many to resist the return of traditional monarchies." Nationalism in the states led to aggressive posturing about where the borders would be. 

Hope this helps.

~Jurgen

♦The answer to your question is Resisting Napoleon's armies prompted many to resist the return of traditional monarchies.♦