To the north, the strait of the Baltic Sea known as the Little Belt (Danish: Lillebælt) ran alongside the ethnically mixed Danish Duchy of Schleswig, part of an area subject to a highly complex...
In the south, the Adige river (German: Etsch) runs to the Adriatic Sea. In 1841, the Austrian Empire ruled all of its length, and much of the population of its area was German. Historically, the river...
In the east, the lower part of the Memel, known in other languages as the Neman, was located within East Prussia, part of the Kingdom of Prussia, which actually stretched north beyond the river, and...