A historical area of north-central European countries bordering regarding Baltic Sea in present-day northwest Poland and northeast Germany. It was populated by Slavic tribes within the tenth century and conquered by Poland in twelfth century. The territory was later separate and controlled by numerous abilities, such as the Holy Roman Empire, Prussia, Sweden, Denmark, and Germany.
an area of European countries regarding the southern shores associated with Baltic Sea, today split between Germany and Poland. It absolutely was formerly a duchy, and later a province of Prussia.