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 Italy
In 1805, after the French victory over the Third Coalition and the Peace of Pressburg, Napoleon recovered Veneto and Dalmatia, annexing them to the Italian Republic and renaming it the Kingdom of Italy. Also that year a second satellite state, the Ligurian Republic (successor to the old Republic of Genoa), was pressured into merging with France. In 1806, he conquered the Kingdom of Naples and granted it to his brother and then (from 1808) to Joachim Murat, along with marrying his sisters Elisa and Paolina off to the princes of Massa-Carrara and Guastalla. In 1808, he also annexed Marche and Tuscany to the Kingdom of Italy.