Greenland (both larger) are generally considered to be continental landmasses rather than islands. Three-quarters of Greenland is covered by the only permanent ice sheet outside Antarctica. With a population of about 56,480 (2013), it is the least densely populated territory in the world. About a third of the population live in Nuuk, the capital and largest city. The Arctic Umiaq Line ferry acts as a lifeline for western Greenland, connecting the various cities and settlements. Greenland has been inhabited off and on for at least the last 4,500 years by Arctic peoples whose forebears migrated there from what is now Canada.
Greenland the south-west of the main island, which has a relatively mild climate. More than 17,000 people reside in Nuuk, the capital city. Both Greenlandic (an Eskimo–Aleut language) and Danish have been used in public affairs since the establishment of home rule in 1979; the majority of the population can speak both languages. Greenlandic became the sole official language in June 2009, In practice, Danish is still widely used in the administration and in higher education, as well as remaining the first or only language for some Danish immigrants in Nuuk and other larger towns. Debate about the roles of Greenlandic