True.
The Great European Plain extends from the Pyrenees mountain range (on the border of Spain and France) across northern Europe to the Ural mountain range in Russia. The plain is narrower in Western Europe, expanding in width as it moves toward the east. The size of the plain is great enough that it gives Europe the overall lowest average elevation of any continent. Rivers like the Loire and the Rhine are waterways in the western European part of the plain, and agricultural production is key to the plains region.
