Religion
The conversion to Christianity of the southern Low Countries, which took place largely during the 7th century, led to the foundation of further bishoprics at Arras, Tournai, and Cambrai, which were part of the ecclesiastical province of Rheims (the former Roman province of Belgica Secunda). Germania Secunda contained the ecclesiastical province of Cologne, in which the civitas of Tongres seems to have had an uninterrupted existence as a bishopric since Roman times; the centre of this bishopric was moved for a time to Maastricht (6th and 7th centuries) until, about 720, Liège became the seat of the bishopric. Christianity was brought to the north of the Low Countries mainly by Anglo-Saxon preachers, by Frisians influenced by them, and by Franks. This Anglo-Saxon Christianity was particularly important in the missionary bishopric of Utrecht, which at first, because of its missionary character, had no precisely defined borders. True, the city of Utrecht had been named as the see of the bishopric, but, as in England, the monasteries played an important part in the missionary work; among these was the monastery of Echternach in Luxembourg and the two important Benedictine abbeys in and near Ghent, founded by St. Amand in the early 7th century. The country between the Meuse and the Waal rivers and the area around Nijmegen belonged to the bishopric of Cologne, while certain districts in the north and east were part of the bishopric of Münster (founded by Charlemagne).