中法兰克王国
In the Treaty of Ribemont, concluded by Louis the Younger and Charles' grandsons Louis III of France and Carloman of France in 880, East Francia also gained the western part of Middle Francia including the mouths of the rivers Rhine, Maas and Scheldt and the cities Metz, Sedan, Strasbourg, Toul, Verdun, Cambrai and Antwerp.