The best example of the success of nationalism in Europe is the?

The best example of the success of nationalism in Europe is the unification of Germany in the 19th century. Spearheaded by figures like Otto Von Bismarck, nationalism fueled the movement to consolidate various German states into a single nation-state by 1871. This unification not only fostered a strong national identity among Germans but also significantly altered the political landscape of Europe, leading to increased tensions and rivalries in the region.