Condominium (international law)
form of subnational government in which multiple sovereign powers share sovereignty over a territory
Condominium means a colony ruled jointly by two or more countries. Examples include the Anglo-Egyptian Sudan, which was in name under the joint rule of the United Kingdom and Egypt, although in fact a British colony with all political decisions up to the British despite having many Egyptians involved in administering the country, and New Hebrides, which was under the joint rule of the UK and France.