Border control is the implementation of border controls on travel between Svalbard, which maintains a policy of free migration as a result of the Svalbard Treaty (Norwegian: Svalbard-traktaten; ) and the Schengen Area, which includes the rest of Norway. The Kingdom of Denmark also maintains a complex system of subnational countries with autonomous customs policies, since they aren’t within the European Union like the Danish mainland. These are Greenland () and the Faroe Islands (). These areas do not maintain strict immigration controls with the Schengen Area, but border controls are sporadically enforced for customs purposes. Other examples of effective internal border
Withdrawal of Greenland from the European Communities withdraw was made after Greenland had achieved self-rule, was made to protect Greenland's rights to its fishing waters and to limit external influence. The Treaty entered into force on 1 January 1985, and on 1 February 1985, Greenland formally withdrew from the European Communities. Withdrawal of Greenland from the European Communities The withdrawal of Greenland from the European Communities took place in 1985. This followed a referendum in 1982 in which 53% voted to leave. The Greenland Treaty was an agreement between the member states of the European Communities, concerning Greenland's exit from the European Communities. It followed the Greenlandic