North America's only land connection to South America is at the Isthmus of Panama. The Caribbean islands, or West Indies, are considered part of North America. The continental coastline is long and irregular. The Gulf of Mexico is the largest body of water indenting the continent, followed by Hudson Bay. read more
Mexico is within North America, if you use the seven-continent definition (North America, South America, Europe, Africa, Asia, Australia/Oceania, Antarctica). This is demonstrated by the fact that Mexico is located within the North American tectonic plate. read more
In contrast to the common definition of "North America", which encompasses the whole continent, the term "North America" is sometimes used to refer only to Mexico, Canada, the United States, and Greenland. read more