The German national anthem Deutschlandlied was written in 1841, giving four water bodies as borders of the en:German language Sprachraum of the time "Von der Maas bis an die Memel, von der Etsch bis an den Belt". This maps outlines them, and the border of the en:German Confederation of the time. Russian version
Own workThis file was derived from: Maas memel etsch belt.svg
Mueck
Derivative work: Dmitrij Rodionov / DR