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,
History of the Jews in Sardinia and Corsica were also ordered to leave. Many Sardinian Jews arrived in Malta, Greece, and Calabria, Italy, which became a temporary home for other Sephardic refugees as well. Sardinia is also mentioned in the Inquisition records pertaining to a population of Marranos. During the 19th century a modest number of Jewish families from Italy settled back on the island. Sardinian Jews were emancipated on March 29, 1848. In the years that followed, 180 Jews joined the Sardinian army. The Prime minister of Sardinia became embroiled in the Edgardo Mortara affair. A secret plot was hatched to kidnap the boy and