Pas-de-Calais is a department in northern France. Its name is the French language equivalent of the Strait of Dover, which it borders. History Inhabited since prehistoric times, Pas-de-Calais has been inhabited in turn by the Celtic Belgae, the Romans, the Germanic Franks and the Alemanni. During the 4th and 5th centuries, the Roman practice of coopting Germanic tribes to provide military and defense services along the route from Boulogne to Cologne created a Germanic-Romance linguistic border… (More on Pas-de-calais)