The great sea expeditions of the Viking Age - The basis of the great sea expeditions undertaken by the Vikings was ship technology. The Viking ship was a piece of high technology based upon hundreds of years of development and experience.
The Viking-age Fylki (Petty kingdoms) in Norway before the unification. by jkvatterholm: “ Important! This is the “de jure” regions so to say. A petty king might have power in 2 or 3 of them, or they might be divided in various ways. The fylki are.