Rhineland-Palatinate
On 10 July 1945 the occupation authority on the soil of the present-day Rhineland-Palatinate transferred from the Americans to the French. To begin with, the French divided the region provisionally into two "upper presidiums" ("Oberpräsidien"), Rhineland-Hesse-Nassau (for the hitherto Prussian government districts and regions of Koblenz, Trier, and Montabaur) and Hesse-Palatinate (for the hitherto Bavarian Palatinate and old Hessian-Darmstadt province of Rhenish Hesse). The formation of the state was ordained on 30 August 1946, the last state in the Western Zone of Occupation to be established, by Regulation No. 57 of the French military government under General Marie-Pierre Kœnig. It was initially called Rhenish-Palatinate ("Rheinpfälzisches Land" or "Land Rheinpfalz"); the name Rhineland-Palatinate ("Rheinland-Pfalz") was first confirmed in the constitution of 18 May 1947.
Bavaria
The Rhenish Palatinate was detached from Bavaria in 1946 and made part of the new state Rhineland-Palatinate. During the Cold War, Bavaria was part of West Germany. In 1949, the Free State of Bavaria chose not to sign the Founding Treaty ("Gründungsvertrag") for the formation of the Federal Republic of Germany, opposing the division of Germany into two states, after World War II. The Bavarian Parliament did not sign the Basic Law of Germany, mainly because it was seen as not granting sufficient powers to the individual "Länder", but at the same time decided that it would still come into force in Bavaria if two-thirds of the other "Länder" ratified it. All of the other "Länder" ratified it, and so it became law.