The Ruhr Question was a political topos put on the agenda by the Allies of World War I and the Allies of World War II in the negotiations following each respective war, concerning how to deal with the economic and technological potential of the area where the Rhine and Ruhr intersect. France was heavily in favor of monitoring this region, due to the perception that the economic and technological potential of the region had allowed the German Reich to threaten and occupy France during the Franco-Prussian War, World War I, and World War II. The Ruhr question was intimately associated with the Saar Statute and the German Question. There was also a close relationship between the Ruhr Question and the Allied occupation of the Rhineland (1919-1930), the Occupation of the Ruhr (1923-1924, 1925), the founding of the state of North Rhine-Westphalia (1946), the Monnet Plan (1946-1950), the Marshall Plan (1948-1952), the International Authority for the Ruhr (1949-1952), the Schuman Declaration (1950), and the founding of the European Coal and Steel Community (1951). The political treatment of the Ruhr question is known as "Ruhrpolitik" in German. When one looks at the Rhineland as a whole or the attempted establishment of the Rhenish Republic in 1923, the terms "Rhein- und Ruhrfrage" or "Rhein-Ruhr-Frage" are used in German.