While online maps aren't known for precise accuracy, there are times when seconds count (ie slight errors made by surveyors). Although these may be approximations within an acceptable range of error, the precision is needed for differential purposes. North America is defined as everything on the main landmass north of the Colombia/Panamaian border, Greenland, the Aleutian Islands, and all Caribbean islands not belonging to South American states. Dependencies are not included in this quiz; however, France has two departments in the Caribbean, Greenland is an integral part of the Kingdom of Denmark, and Sint Maarten, the Caribbean Netherlands, Aruba, and Curaçao are integral parts of the Kingdom of the Netherlands. Also, for the purposes of this quiz, we're going for the easternmost relative to the centre of the continent (as Alaska crosses the 180th meridian).