What personal union between England, Denmark and Norway was also known as the Anglo-Scandinavian Empire?
History of Anglo-Saxon England:  It became part of the North Sea Empire of Cnut the Great, a personal union between England, Denmark and Norway in the 11th century. North Sea Empire: The Danish North Sea Empire, also known as the Anglo-Scandinavian Empire, was the thassalocratic domain ruled by Cnut the Great as king of England, Denmark, Norway and parts of what is now Sweden between 1016 and 1035.
North Sea Empire