Corsica Corsican honey, of which there are six official varieties, is certified as to its origin (Appellation d'origine contrôlée) by the French National Institute of Origin and Quality (Institut National des Appellations d'Origine – INAO). Corsica's main exports are granite and marble, tannic acid, cork, cheese, wine, citrus fruit, olive oil and cigarettes. Corsica has four international airports: All airports are served by regional French airline Air Corsica, as well as Air France which mainly offers connections to Paris-Orly. Budget carriers such as EasyJet and Ryanair offer seasonal connections to different cities in Europe. The island has of metre gauge railway.
Medieval Corsica of unity and central government. Towards the end of the eleventh century, the Papacy laid claim to Corsica, saying it had been donated to the Church by Charlemagne. In fact, all Charlemagne had done was promise that stolen ecclesiastical lands would be returned. Nevertheless, the clergy of Corsica supported the Papacy. In 1077, Pope Gregory VII wrote a letter addressed to the Corsican church, regretting that the Papacy had for so long neglected the island and announcing that he was sending Landulf, bishop of Pisa, as his apostolic legate to the island. In 1092, Pope Urban II raised the bishopric