Rhineland-Palatinate
The state of Rhineland-Palatinate was founded shortly after the Second World War on 30 August 1946. It was formed mainly from the southern part of the Prussian Rhine Province (the "Regierungsbezirke" of Koblenz and Trier), from Rhenish Hesse, from the western part of Nassau and the Bavarian Rhenish Palatinate minus the county of Saarpfalz. The Joint German-Luxembourg Sovereign Region ("Gemeinschaftliches deutsch-luxemburgisches Hoheitsgebiet") is the only unincorporated area of the state of Rhineland-Palatinate. This condominium is formed by the rivers Moselle, Sauer, and Our, where they run along the border between Luxembourg and Rhineland-Palatinate or the Saarland.
Circle of the Rhine
In 1837, the Circle of the Rhine was renamed the Palatinate ('). It was also referred to as the Rhenish Palatinate ('). The territory remained Bavarian until 30 Aug 1946, with the exception of the area detached in 1920, which roughly corresponded to the present day county of . It then became part of the newly formed federal state of Rhineland-Palatinate.