1881 where Ci'xi became sole regent for the Guanxu Emperor until she was overthrown in 1908, it was more interesting during her time that Ci'an particularly specialized in handling the affairs of the Imperial family and left Ci'xi to dominate the political scene much as contemporary history suggests that Ci'an was more willing to keep Ci'xi as her ally than to make her an enemy given the fact that Ci'xi welded more political power than she ever did she in turn eliminated any form of competition for supremacy with the latter even if she was Senior to her. Co-principality The only co-principality in the world is Andorra, a small South-western European country located on the Iberian Peninsula. As part of a peace agreement, joint rule between the Count of Foix and the Bishop of Urgell was established by a formal act of Paréage in 1278. The counts' right eventually passed to the French state, and joint rule between France (now embodied by its president) and the Bishop of Urgell was codified in the Constitution of Andorra in 1993. See also Condominium (international law) Diarchy Jure uxoris Personal union References Monarchy Collective heads of state