What is "osterland"

Österland (Eastland) or Österlanden (Easternlands), one of the four traditional lands of Sweden, was a medieval term used for the southern part of Finland. It gradually fell out of use by the 15th century. Finland remained a part of Swedish Realm until after the Finnish war of 1808–09, when it was ceded to Russia and came to constitute the autonomous Russian Grand Duchy of Finland.

Osterland (terra orientalis) is a historical region in Germany. It was situated between the Elbe and Saale rivers to the north of Pleissnerland which it later absorbed and it included the city of Leipzig. The name derives from the previous name of the territory, Ostmark, meaning "eastern march."

Today, the area belongs to the German states of Thuringia and Saxony.