Greenland is an island located east of Canada. It is a constituent country of Denmark, and its capital city is Nuuk. Greenland is the world’s largest island, and an ice sheet covers three quarters of it. Norsemen settled in Greenland in the tenth century, including Leif Erikson, who would be the first European to reach North America. It was occupied by the United States in 1941 when Denmark was occupied by Nazi Germany.