Italian unification (called in Italian the Risorgimento, or "Resurgence") was the political and social process that unified different states of the Italian peninsula into the single nation of Italy.It is difficult to pin down exact dates for the beginning and end of Italian reunification, but most scholars agree that it began with the end of Napoleonic rule and the Congress of Vienna in 1815, and approximately ended with the Franco-Prussian War in 1871, though the last "città irredente" did not join the Kingdom of Italy until the Italian victory in World War I.
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