European Union representation within those institutions, a practice often referred to as "pooling of sovereignty". To become a member, a country must meet the Copenhagen criteria, defined at the 1993 meeting of the European Council in Copenhagen. These require a stable democracy that respects human rights and the rule of law; a functioning market economy; and the acceptance of the obligations of membership, including EU law. Evaluation of a country's fulfilment of the criteria is the responsibility of the European Council. No member state has yet left the Union, although Greenland (an autonomous province of Denmark) withdrew in 1985. Article 50 of
Autonomous administrative division their own name. Tokelau remains an autonomous dependency of New Zealand. The Chatham Islands—despite having the designation of "Territory"—is an integral part of the country, situated within the New Zealand archipelago. The territory's council is not autonomous and has broadly the same powers as other local councils, although notably it can also charge levies on goods entering or leaving the islands. Aruba, Curaçao, and Sint Maarten are autonomous countries within the Kingdom of the Netherlands, each with their own parliament. In addition they enjoy autonomy in taxation matters as well as having their own currencies. The French constitution recognises three