Central America is the thin section of land that links the North American continent with the South American continent. Geographically part of North America, it is made up of seven small, mostly tropical countries that have much more in common with South America and Mexico than the more affluent north. Mexico is occasionally considered part of Central America due to the language and indigenous/Hispanic cultural heritage it shares with several of the countries in the region.
North America is the third largest continent, with a surface area of 24,221,490 sq km (9,351,969 sq miles). It is located in the northern hemisphere, between the Pacific Ocean and the Atlantic Ocean and to the north of South America. North America's highest point is Alaska's Mount McKinley, which rises to 6,194 m (20,320 ft) above sea level.
North America consists of three large nations and one large island territory that covers most of its area. They are Canada, the United States of America (USA), Mexico and Greenland. There are also seven smaller nations at its southern extreme (collectively known as Central America), around two dozen island nations and territories of various sizes in the Caribbean, and one isolated French territory off the Canadian Atlantic coast. Although the Central American and the Caribbean regions are technically part of the North American continent, they are commonly listed separately from their larger neighbors to the north and hence the distinctive region names for both cultural and geographical reasons.