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.
Sicily
The original classical-era inhabitants of Sicily comprised three defined groups of the ancient peoples of Italy. The most prominent and by far the earliest of these, the Sicani, who (Thucydides writes) arrived from the Iberian Peninsula (perhaps Catalonia). However, modern scholars suggest classifying the Sicani as an Illyrian tribe. Important historical evidence has been discovered in the form of cave drawings by the Sicani, dated from the end of the Pleistocene epoch around 8000 BC. The arrival of the first humans on the island correlates with the extinction of the Sicilian Hippopotamus and the dwarf elephant. The Elymians, thought to have come from the area of the Aegean Sea, became the next tribe to join the Sicanians on Sicily.