The Canal de la Marne au Rhin (French pronunciation: [kanal də la maʁn o ʁɛ̃], Marne–Rhine Canal) is a canal in north-eastern France. It connects the river Marne and the Canal entre Champagne et Bourgogne in Vitry-le-François with the port of Strasbourg on the Rhine. The original objective of the canal was to connect Paris and the north of France with Alsace and Lorraine, the Rhine, and Germany. The 313 km (194 mi) long canal was the longest in France when it opened in 1853.
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