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Dominium maris baltici
From Wikipedia, the free encyclopedia
The establishment of a dominium maris baltici[nb 1] ("Baltic Sea dominion") was one of the primary political aims of the Danish and Swedish kingdoms in the late medieval and early modern eras.[1][2] Throughout the Northern Wars the Danish and Swedish navies played a secondary role, as the dominium was contested through control of key coasts by land warfare.[3]
Baltic Sea in 1219
Conquered by Denmark in 1219 (Pomerania conquered in 1219, lost in 1227. Ösel purchased in 1559, lost in 1645)