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.
Sicilian language
In 535, Justinian I made Sicily a Byzantine province, which returned the Greek language to a position of prestige, at least on an official level. At this point in time the island could be considered a border zone with high levels of bilingualism: Latinisation was mostly concentrated in western Sicily, whereas Eastern Sicily remained predominantly Greek. As the power of the Byzantine Empire waned, Sicily was progressively conquered by Saracens from North Africa ("Ifriqiya"), from the mid 9th to mid 10th centuries. The Emirate of Sicily persisted long enough to develop a distinctive local variety of Arabic, Siculo-Arabic (at present extinct in Sicily but surviving as the Maltese language). Its influence is noticeable in around 100 Sicilian words, most of which relate to agriculture and related activities. This is understandable because of the Arab Agricultural Revolution; the Saracens introduced to Sicily their advanced irrigation and farming techniques and a new range of crops, nearly all of which remain endemic to the island to this day.