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.
Islam in Italy
The cultural and economical bloom in Sicily that had started under the Kalbids was interrupted by internecine fights, followed by invasions by the Tunisian Zirids (1027), Pisa (1030–1035), and the Romans (1027 onwards). Eastern Sicily (Messina, Syracuse and Taormina) was captured by the Byzantines in 1038–1042. In 1059 Normans from southern Italy, led by Roger I, invaded the island. The Normans conquered Reggio in 1060 (conquered by the Romanin 1027). Messina fell to the Normans in 1061; an invasion by the Algerian Hammadids to preserve Islamic rule was thwarted in 1063 by the fleets of Genoa and Pisa. The loss of Palermo in 1072 and of Syracuse in 1088 could not be prevented. Noto and the last Muslim strongholds on Sicily fell in 1091. In 1090–91 the Normans also conquered Malta; Pantelleria fell in 1123.