History of Cyprus since 1878 proclaimed Cyprus the Crown colony of British Cyprus in 1925, under an undemocratic constitution. International recognition of the new Republic of Turkey resulted from the Treaty of Lausanne in 1923 in which the new Turkish government formally recognised Britain's sovereignty over Cyprus (article 20). The administration was reformed in the latter 1920s, and some members of the Legislative Council (established 1926) were elected by the Cypriots, but their participation was very marginal. The Legislative Council was abolished in 1931. Greek Cypriots believed the circumstances were right to demand union of the island with Greece (enosis), as many of the Aegean
Foreign relations of Northern Cyprus stance, the TRNC refuses any official recognition of the government of the Republic of Cyprus, calling it the ""Greek Cypriot Administration of Southern Cyprus"", and referring to its President as the ""Greek Cypriot Leader"". Turkey backs this position. After the Republic of Cyprus became a member of the European Union, the southern part of the island became part of the Customs Union of EU. The Northern part of the island is excluded from the Customs Union. In spite of that, the Green Line regulations are intended to ease trade relations between North Cyprus and EU. Oil exploration in East Mediterranean