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.
Trier (region)
After the Second World War the French military government several times extended the Saar area before forming the Saar Protectorate, also including additional 109 municipalities belonging until July 1946 to the Trier Region and some to the Koblenz Region. Koblenz Region's former areas make up part of today's St. Wendel district in the Saarland. In December 1946, when a new customs boundary dissected the Saar Protectorate (later becoming the Saarland) from the area under the Allied Control Council over Allied-occupied Germany, the Trier Region with its then remaining territory had become one of the then five regions forming the new state of Rhineland-Palatinate, founded in August 1946. Later, the French occupation government again redeployed some municipalities – some returned to Allied-occupied Germany, some newly annexed to the protectorate – between the Saar area and the new state of Rhineland-Palatinate in 1947 and 1949, before the border was finally fixed.