The Kingdom of Sardinia (Italian: Regno di Sardegna, Sardinian: Rennu de Sardigna, Piemontese: Regn ?d Sard?gna; also known as Piedmont-Sardinia or Sardinia-Piedmont) consisted of the possessions of the House of Savoy from 1720 or 1723 onwards, following the award of the crown of Sardinia to King Victor Amadeus II of Savoy under the Treaty of The Hague (1720). This compensated him for the loss of the crown of Sicily to Austria and allowed him to retain the title of king, as the title "King of Sardinia" had existed since the 14th century.

Kingdom of Sardinia

Besides Sardinia, the Savoyard state at that time included Savoy, Piedmont, and Nice; Liguria, including Genoa, was added by the Congress of Vienna in 1815. During most of the 18th and 19th centuries, the political and economic capital of the kingdom was Turin in Piedmont on the Italian mainland. In 1860, Nice and Savoy were ceded to France in return for French consent and assistance in Italian unification. In 1861, the Kingdom of Sardinia became the founding state of the new Kingdom of Italy, annexing all other Italian states. The Kingdom thus continued in legal continuity with the new Italian state, to which it transferred all its institutions.

(source: Wikipedia)

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