The best example of success of nationalism in Europe

Answer

The unification of Italy in 1861 through successful nationalism efforts.

Q: What is nationalism? A: Nationalism is a political ideology that emphasizes the interests of one's own nation above those of other nations.
Q: How does this relate to Europe? A: Throughout history, Europe has experienced various instances of nationalism as a reaction against foreign rule or influence.
Q: What is an example of successful nationalism in Europe? A: One example of successful nationalism in Europe is the unification of Italy in 1861, which brought together different regions and dialects under a common language and government.