King Olaf made Christian law to be proclaimed in Viken, in the same way
as in the North country. It succeeded well, because the people of Viken
were better acquainted with the Christian customs than the people in the
north; for, both winter and summer, there were many merchants in Viken,
both Danish and Saxon. The people of Viken, also, had much trading
intercourse with England, and Saxony, and Flanders, and Denmark; and
some had been on viking expeditions, and had had their winter abode in
Christian lands.