Reichsgau Wartheland was a Nazi German Reichsgau formed from Polish territory annexed in 1939. It comprised the Greater Poland and adjacent areas, and only in part matched the area of the similarly named pre-Versailles Prussian province of Posen. The name was initially derived from the capital city, Posen, and later from the main river, Warthe. The bulk of the area had been annexed by the Kingdom of Prussia from 1793 until 1807 as South Prussia. From 1815 to 1849, the territory was within the autonomous Grand Duchy of Posen, which was the Province of Posen until Poland was reestablished in 1918–1919 following World War I. Wikipedia [ - ]

Reichsgau Wartheland was a Nazi German Reichsgau formed from Polish territory annexed in 1939... [ + ]