The Dukes of Brabant were rulers of the historical region of Brabant, which is now part of modern-day Belgium and Netherlands. The title emerged in the 11th century and was held by various noble families, most notably the House of Reginar and later the House of Habsburg. The dukes played a significant role in the political landscape of medieval Europe. Brabant was an important center for trade and culture during the Middle Ages, contributing to the prosperity of the region. The dukes were known for their efforts in promoting commerce and urban development, particularly in cities like Brussels and Antwerp. The title of Duke of Brabant eventually became part of the larger Habsburg dominion in the 15th century.