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 the island was placed under the government of the newly organized Praetorian prefecture of Africa. However, the exarchate was not able to protect the island from the raiding by the Ostrogoths and the Lombards, who moved down into Italy from the north beginning in 568. After the loss of the African mainland territories of the exarchate to the Umayyad dynasty in 709, the empire's power in the West deteriorated further. Saracen raiders began to prey on Corsica, leading Liutprand the Lombard to invade circa 725 to preempt Saracen designs. The first Muslim raid on Corsica took place in 713. These