Demise
The approval of the Treaty of Rapallo on 12 November 1920 turned Fiume into an independent state, the Free State of Fiume.
D'Annunzio ignored the Treaty of Rapallo and declared war on Italy itself. On 24 December 1920 the Italian army and a bombardment by the Royal Italian Navy forced the Fiuman legionnaires to evacuate and surrender the city.
The Free State of Fiume would officially last until 1924, when Fiume was eventually annexed to the Kingdom of Italy under the terms of the Treaty of Rome, 1924. The administrative division was called the Province of Carnaro.
Read more about this topic: Italian Regency Of Carnaro