Kingdom of Sardinia
On 17 March 1861, law no. 4671 of the Sardinian Parliament proclaimed the Kingdom of Italy, so ratifying the annexations of all other Apennine states, plus Sicily, to the Kingdom of Sardinia. The institutions and laws of the Kingdom were quickly extended to all of Italy, abolishing the administrations of the other regions. Piedmont became the most dominant and wealthiest region in Italy and the capital of Piedmont, Turin, remained the Italian capital until 1865, when the capital was moved to Florence. But many revolts exploded throughout the peninsula, especially in southern Italy, and on the island of Sicily, because of the perceived unfair treatment of the south by the Piedmontese ruling class. The House of Savoy ruled Italy until 1946 when Italy was declared a republic by referendum. In this referendum the southern regions, including Sardinia, voted overwhelmingly in favor of the House of Savoy, with the results being 63.8% in favor of maintaining the monarchy.
Italian Fascism
To the west of Italy, the Fascists claimed that the territories of Corsica, Nice and Savoy held by France were Italian lands. During the period of Italian unification in 1860 to 1861, Prime Minister of Piedmont-Sardinia, Camillo Benso, Count of Cavour, who was leading the unification effort, faced opposition from French Emperor Napoleon III who indicated that France would oppose Italian unification unless France was given Nice and Savoy that were held by Piedmont Sardinia, as France did not want a powerful state having control of all the passages of the Alps. As a result, Piedmont-Sardinia was pressured to concede Nice and Savoy to France in exchange for France accepting the unification of Italy. The Fascist regime produced literature on Corsica that presented evidence of the "italianità" (Italianness) of the island. The Fascist regime produced literature on Nice that justified that Nice was an Italian land based on historic, ethnic and linguistic grounds. The Fascists quoted Medieval Italian scholar Petrarch who said: "The border of Italy is the Var; consequently Nice is a part of Italy". The Fascists quoted Italian national hero Giuseppe Garibaldi who said: "Corsica and Nice must not belong to France; there will come the day when an Italy mindful of its true worth will reclaim its provinces now so shamefully languishing under foreign domination". Mussolini initially pursued promoting annexation of Corsica through political and diplomatic means, believing that Corsica could be annexed to Italy through first encouraging the existing autonomist tendencies in Corsica and then independence of Corsica from France, that would be followed by annexation of Corsica into Italy.