History of Sardinia the speech of the majority of the inhabitants, ultimately developing into the modern Sardinian language, also the Roman religion began to spread among Sardinians. Caralis, the provincial capital, Nora and Sulci obtained the status of Municipium within the 1st century AD and a Roman colony named Turris Libissonis (Porto Torres) was founded in the north-west while the village of Usellus become perphans a Roman colony under Trajan. 4 great roads were built: 2 along the coasts and 2 in the interior connecting all the major cities. During the Roman period, the geographer Ptolemy noted that Sardinia was inhabited by the
Kingdom of Sardinia James and his successors conquered the island of Sardinia and established "de facto" their "de jure" authority. In 1420, after the Sardinian-Catalan War, the last competing claim to the island was bought out. After the union of the crowns of Aragon and Castile, Sardinia became a part of the burgeoning Spanish Empire. In 1720 it was ceded by the Habsburg and Bourbon claimants to the Spanish throne to Duke Victor Amadeus II of Savoy. The Kingdom of Sardinia came to be progressively identified with the states ruled by the main branch of the House of Savoy, which included, besides Savoy