Vexin

Vexin vĕksăNˈ [key], region of N France. It is mainly agricultural, with some industry in the valleys. By the Treaty of Saint-Clair-sur-Epte (911), the northernmost part (Vexin Normand) was assigned to Rollo of Normandy; the rest (Vexin Français) remained with the French crown. Pontoise, Gisors, and Les Andelys (see Andelys, Les) are the chief towns.

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