Italian irredentism (Italian: irredentismo italiano [irredenˈtizmo itaˈljaːno]) was a political movement during the late 19th and early 20th centuries in the Kingdom of Italy. It originated to promote the annexation of majority Italian-speaking territories which were still retained by the Austrian Empire after three wars of independence (1848-1849, 1859 and 1866); specifically, Trento and Trieste were designated as the main "irredent lands". Both provinces were ultimately annexed as a result of World War I, considered in Italian discourse to be the "fourth war of independence": the conclusion of the conflict on November 4, 1918, is still commemorated in Italy as National Unity Day. Thereafter, Italian irredentism waned in importance; however, Italian nationalists and fascists would use irredentist arguments to justify the Italianization of other territories Italy annexed in World War I (such as South Tyrol and the Slavic parts of Istria) and claim many other lands beyond Trento and Trieste. Those latter policies and claims have been abandoned by the Italian Republic.