The Vexin is an area of the North-West of the France whose origin goes back to first the time division of the Royaume of France. Actually, Vexin is more one entity geographical and natural that political and historical. One can roughly delimit it on the wide area is/western between Pontoise and Rouen and NORTH-SOUTH between Auneuil and the the Seine close to Vernon. It extends on five departments: Val-d'Oise, Yvelines, the Eure, Seine-Maritime and the Oise.

History

The origin of the name comes from the Gallic Peuple of the Véliocasses which occupied in extension the area: the Pagus of Véliocasses which became the country of Vexin .

In 911, when the king Charles III Simple the must give up a territory with the Viking Rollon, which will constitute the Duché of Normandy, Vexin finds himself divided into two following the layout of the river Epte, small affluent of the Seine. This is why one speaks about Norman Vexin for the western part and of French Vexin for the part is.

Physical and human geography

Vexin is essentially a plate with cereal vocation divided between the Île-de-France and the Normandy, which extends from the new Ville of Cergy-Pontoise to the doors of Rouen, on an about sixty kilometers along Right Bank of the the Seine. It is notched by two North-South directed principal valleys, those of the Epte and the Andelle.

For a detailed description, to see: French Vexin and Norman Vexin