Rhineland
In 1946, the Rhineland was divided into the newly founded states of Hesse, North Rhine-Westphalia, and Rhineland-Palatinate. North Rhine-Westphalia is one of the prime German industrial areas, containing significant mineral deposits, (coal, lead, lignite, magnesium, oil, and uranium) and water transport. In Rhineland-Palatinate agriculture is more important, including the vineyards in the Ahr, Mittelrhein, and Mosel regions.
Circle of the Rhine
The Rhine Circle largely covered the same area as the present Palatinate region, which lies west of the Rhine in the south of the German state of Rhineland-Palatinate, but included additionally the districts of and . These were incorporated into the Saar region after the end of the First World War and merged in 1974 into the . After the Second World War there were smaller losses of territory to the , especially in the area of . As part of the 1969 land reform the region designated as the Palatinate with Rhineland-Palatinate had its northern border changed somewhat. The Diocese of Speyer and the Evangelical Church of the Palatinate still exist today largely based on the historic boundaries of the Circle of the Rhine.