At its height during the 14th and 15th centuries, the duchy of Burgundy was one of the richest and most powerful states in Europe and encompassed a vast swath of territory stretching from modern-day Burgundy to Alsace and northwest to Lorraine, Luxembourg, Flanders and Holland. This was a time of bitter rivalry between Burgundy and France; indeed, it was the Burgundians who sold Jeanne d'Arc (Joan of Arc) to the English, and for a while it seemed quite possible that the kingdom of France would be taken over by Burgundy. In the end, though, it worked out the other way around, and in 1477 Burgundy became French.
During the Middle Ages two Burgundy-based monastic orders exerted significant influence across much of Christendom. The ascetic Cistercians were headquartered at Cîteaux, while their bitter rivals, the powerful and worldly Benedictines, were based at Cluny.