The Viking expansion to Sørsjø forced Vinland and Markland to establish the first official frontier in Vanlland. It inspired Dorset and Skræland to do the same. This was when Skræland annexes the last dorsetian remnants in the gulf. The king of Kawawachikamach encouraged Cnut III to declare war against the Kingdom of Dorset, for its treason in the war against Grønland. The whole coast of the gulf of Dorset was absorbed. In reprisal, Dorset captured the northern coast, bacema allied of Skræland.Cnut III and Cnut IV continued allowing the Kawawachikamachian expansion.