Normandy is one of the 18 regions of France, roughly referring to the historical Duchy of Normandy.Normandy is divided into five administrative departments: Calvados, Eure, Manche, Orne, and Seine-Maritime. It covers 30,627 square kilometres (11,825 sq mi), comprising roughly 5% of the territory of metropolitan France. Its population of 3.37 million accounts for around 5% of the population of France. The inhabitants of Normandy are known as Normans, and the region is the historic homeland of the Norman language.The historical region of Normandy comprised the present-day region of Normandy, as well as small areas now part of the departments of Mayenne and Sarthe. The Channel Islands (French: Îles Anglo-Normandes) are also historically part of Normandy; they cover 194 km² and comprise two bailiwicks: Guernsey and Jersey, which are British Crown dependencies over which Queen Elizabeth II reigns as Duke of Normandy. Normandy's name comes from the settlement of the territory by mainly Danish and Norwegian Vikings ("Northmen") from the 9th century, and confirmed by treaty in the 10th century between King Charles III of France and the Viking jarl Rollo. For a century and a half following the Norman conquest of England in 1066, Normandy and England were linked by Norman and Frankish rulers.Between 1956 and 2015 Normandy was divided into two administrative regions: Lower Normandy and Upper Normandy; the regions were merged into one single region on 1 January 2016. Upper Normandy (Haute-Normandie) consisted of the French departments of Seine-Maritime and Eure, and Lower Normandy (Basse-Normandie) of the departments of Orne, Calvados, and Manche.Normandy is sparsely forested: 12.8% of the territory is wooded, compared to a French average of 23.6%, although the proportion varies between the departments. Eure has most cover (21%) while Manche has least (4%), a characteristic shared with the Islands.The Regional Council has 102 members who are elected under a system of proportional representation. The executive consists of a president and vice-presidents. Hervé Morin from the Centre party was elected president of the council in January 2016.Much of Normandy is predominantly agricultural in character, with cattle breeding the most important sector (although in decline from the peak levels of the 1970s and 1980s).The main cities (population given from the 1999 census) are Rouen (518,316 in the metropolitan area), the capital since 2016 of the province and formerly of Upper Normandy; Caen (420,000 in the metropolitan area) and formerly the capital of Lower Normandy; Le Havre (296,773 in the metropolitan area); and Cherbourg (117,855 in the metropolitan area).The traditional provincial flag of Normandy, gules, two leopards passant or, is used in both modern regions. Architecturally, Norman cathedrals, abbeys (such as the Abbey of Bec) and castles characterise the former duchy in a way that mirrors the similar pattern of Norman architecture in England following the Norman Conquest of 1066.Fish and seafood are of superior quality in Normandy. Turbot and oysters from the Cotentin Peninsula are major delicacies throughout France. Normandy is the chief oyster-cultivating, scallop-exporting, and mussel-raising region in France.