Religion in Nord-Pas-de-Calais
Religion in Nord-Pas-de-Calais has the same status as religion in France, a secular country since 1905. The region began to be Christianized before the 16th century, with the establishment of monasteries during the Merovingian (5th–8th centuries) and Carolingian (8th–9th centuries) periods.
Source: Wikipedia — Religion in Nord-Pas-de-Calais (CC BY-SA 4.0)