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Nationalism, which began in the 1800's through the events of the French Revolution, became a powerful force in Europe in the later nineteenth century. Though Prince Klemens von Metternich attempted to crush the forces of nationalism, since he feared it's power, nationalism continued to expand across Europe. As it grew, nationalism united people in the countries of Italy and Germany. Yet, it also divided the Ottoman and Austro-Hungarian empires and led to the outbreak of wars. __Nationalism was a driving force in both the unification and disunification of countries and empires in Europe.__