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.
History of Sardinia
The loss of the independence, the firm Aragonese (later Spanish from 1479) rule, with the introduction of a sterile feudalism, as well as the discovery of the Americas, provoked an unstoppable decline of Sardinia. In the 1470s an important revolt against the Aragonese was led by Leonardo Alagon, marquess of Oristano, who managed to defeat the viceroyal army but was later crushed at the Battle of Macomer (1478), ending any further hope of independence for the island. The unceasing attacks from North African pirates and a series of plagues (from 1582, 1652 and 1655) further worsened the situation.