Solution:
The above statement is true.Nationalism no longer retained its idealistic, liberal democratic sentiment by Europe's last quarter of the nineteenth century. Nationalist organisations developed a growing intolerance, which caused a war. Major European nations exploited nationalist sentiment to further their imperialist goals. The Balkan region was the origin of nationalist unrest in Europe. The Balkans' passionate nationalism and the collapse of the Ottoman Empire contributed to the region's high level of unrest. European nationalities gradually rebelled and proclaimed independence from their rule.
