The Sieg joins this river at Niederkassel, and the Neckar joins it after flowing past Heidelburg and Mannheim, where it turns west.
The Sieg joins this river at Niederkassel, and the Neckar joins it after flowing past Heidelburg and Mannheim, where it turns west. The Battle of Teutoburg Forest established it as the Roman northern frontier, and its namesake crisis occurred when Adolphe Thiers discussed making it a border. Its delta begins to form shortly before Arnheim. The Treaty of Versailles declared the area around it a demilitarized zone, and it flows past Bonn and Cologne on its way to the North Sea. For 10 points, name this river of West Germany.
The Sieg joins this river at Niederkassel, and the Neckar joins it after flowing past Heidelburg and Mannheim, where it turns west.
{Rhine} River