Carbonia, Sardinia Carbonia is twinned with: <br> Carbonia, Sardinia Carbonia ( is a town and "comune" in the Province of South Sardinia, Sardinia, Italy. Along with Iglesias it was a co-capital of the former province of Carbonia-Iglesias, now suppressed. It is located in the south-west of the island, at about an hour by car or train from the regional capital, Cagliari. Carbonia was founded on the 18 December 1938 by the Fascist regime. Benito Mussolini ordered the building of the city and was present at its inauguration. The city was built to provide housing for the workforce of the nearby mines. The
Kingdom of Sardinia of the Duchy of Milan, while Charles VI (the Holy Roman Emperor and Archduke of Austria), received the Spanish Netherlands, the Kingdom of Naples, Sardinia, and the bulk of the Duchy of Milan. During the War of the Quadruple Alliance, Victor Amadeus II, Duke of Savoy and Prince of Piedmont, had to agree to yield Sicily to the Austrian Habsburgs and receive Sardinia in exchange. The exchange was formally ratified in the Treaty of The Hague of 17 February 1720. Because the kingdom of Sardinia had existed since the 14th century, the exchange allowed Victor Amadeus to retain the title