events led to the independence and unification of Italy (except for Veneto and the province of Mantua, Lazio, Trentino-Alto Adige and Julian March, known as Italia irredenta, which were united with the rest of Italy in 1866 after the Third Italian War of Independence, in 1870 after the capture of Rome, and in 1918 after the First World War respectively); this period of Italian history is known as the Risorgimento. The Italian tricolour waved for the first time in the history of the Risorgimento on 11 March 1821 in the Cittadella of Alessandria, during the revolutions of 1820s, after the oblivion caused by the restoration of the absolutist monarchical regimes. See also Coat of arms of Napoleonic Italy Flag of Italy Coat of arms of Italy Citations References Flags of Italy Kingdom of Italy (Napoleonic)