How did viking become Christians?

Answer 1

The Scandinavian region was Christianized by a talented and aggressive group of missionaries over a period of 400 years, beginning in the 8th century. Archaeological studies show that the conversion process was slow and gradual, and that many local traditions were incorporated into early Scadinavian Christianity. This approach was aided by the lack of absolute central authority from Rome that characterized later Christian dogma when the Papacy became as much political force as religious institution. Also, some Scandinavian regions were Christianized by their rulers, as a political advantage in dealing with their neighboring Christian counterparts in Normandy, France and Germany.