Italian Regency of Carnaro

The Italian Regency of Carnaro (Italian: Reggenza Italiana del Carnaro) was a self-proclaimed state in the city of Fiume (now Rijeka, Croatia) led by Gabriele d'Annunzio between 1919 and 1920. == Impresa di Fiume == During World War I (1914–1918), which the Kingdom of Italy entered on the side of the Allies in May 1915, Italy made a pact with the Allies, the Treaty of London, in which it was promised all of the Austrian Littoral, but not the city of Fiume (known in Croatian as Rijeka).

Source: Wikipedia — Italian Regency of Carnaro (CC BY-SA 4.0)