This is a list of European medieval marches.
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At the beginning of his rule as king of Germany, Otto I tried to reorganize his realm to prepare an expansion to the East. At the beginning of the year 937, he created two marches: the March of the Billungen, given to Hermann Billung, later Duke of Saxony; and the Eastern march, given to Gero. In 961, when Billung became Duke of Saxony, his March was merged with the duchy. In the case of Gero, Otto I, now emperor, decided the division of his territories, greatly expanded since 937.
In 861, Charles the Bald, king of France, created two marches to protect his realm from warriors coming from Brittany and Normandy. Both were named March of Neustria, but will be known as March of Brittany and March of Normandy. In 863, the king created the March of Flanders.
Three marches belonging to the Holy Roman Empire were created in the Low Countries: