FIND OUT MORE. Northern North America is occupied by Canada, the second-largest country in the world, the US state of Alaska, and the Danish self-governing territory of Greenland. Much of Greenland is covered by ice, and all these regions are sparsely populated, although there are several large cities in Canada.These are mainly in the south of the country and on the Pacific coast near the stunning Rocky Mountains.orthern North America is occupied by Canada, the second-largest country in the world, the US state of Alaska, and the Danish self-governing territory of Greenland.