Treaty of Rapallo
The approval of the Treaty of Rapallo on 12 November 1920, between Italy and Yugoslavia, 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, Giolitti sent the Royal Italian Army in Fiume and ordered the Royal Italian Navy to bomb the city; these forced the Fiuman legionnaires to evacuate and surrender the city.