Rhineland-Palatinate
Rhineland-Palatinate was established in 1946 after World War II from territory of the historically separate regions of the Free State of Prussia, People's State of Hesse, and Bavaria, by the French military administration in Allied-occupied Germany. Rhineland-Palatinate became part of the Federal Republic of Germany in 1949, and shared the country's only border with the Saar Protectorate until it was returned to German control in 1957. Rhineland-Palatinate has since developed its own identity built on its natural and cultural heritage, including the extensive Palatinate winegrowing region, its picturesque landscapes, and many castles and palaces.
Hesse
After World War II, the Hessian territory west of the Rhine was again occupied by France, whereas the rest of the region was part of the US occupation zone. The French separated their part of Hesse from the rest of the region and incorporated it into the newly founded state of Rhineland-Palatinate (Rheinland-Pfalz). The United States, on the other side, proclaimed the state of Greater Hesse ("Groß-Hessen") on 19 September 1945, out of Hesse-Darmstadt and most of the former Prussian province of Hesse-Nassau.