section_path: Formal use/Historical diarchies/Medieval Europe
section_name: Medieval Europe
paragraph_text: Medieval Europe
  
  A paréage was a feudal treaty recognizing the " equal footing " (Latin: pari passu) of two sovereigns over a territory. The most famous such arrangement was the 1278 treaty that established modern Andorra. Others include Maastricht, which was shared by the Duke of Brabant and the Prince-Bishop of Liège. After the establishment of the Dutch Republic, it became a condominium of Liège and the United Provinces, which administered it through the States General of the Netherlands until 1794.