Sardinia world (22 centenarians/100,000 inhabitants). Sardinia is the first discovered Blue Zone, a demographic and/or geographic area in the world with an oversize concentration of centenarians and supercentenarians. In 2016 there were 50,346 foreign national residents, forming 3% of the total Sardinian population. The most represented nationalities were: Sardinia's most populated cities are Cagliari and Sassari. The Metropolitan City of Cagliari has 431,302 inhabitants, or about ¼ of the population of the entire island. Eurostat has identified in Sardinia two Functional Urban Areas: Cagliari, with 477,000 inhabitants, and Sassari, with 222,000 inhabitants. Sardinia is one of the five Italian autonomous regions,
Kingdom of Sardinia (1700–1720) Luciano Ortiz—now found themselves working in the Sicilian department. In the later Treaty of London, the Emperor and Victor Amadeus II of Sardinia agreed to exchange Sicily and Sardinia. On 8 August 1720, Philip V's viceroy handed Sardinia over to an Austrian representative, who in turn transferred it to the viceroy of Victor Amadeus. Kingdom of Sardinia (1700–1720) From 1700 to 1720, the Kingdom of Sardinia, as a part of the Spanish empire, was disputed between two dynasties, the Habsburgs and the Bourbons. With the death of Charles II, the last of the Spanish Habsburgs, on 1 November 1700, the