Extent
The term North America maintains various definitions in accordance with location and context. In Canadian English, North America may be used to refer to the United States and Canada together.Alternatively, usage sometimes includes Greenland and Mexico (as in the North American Free Trade Agreement), as well as offshore islands.
In Ibero-America and other parts of Europe,[which?] North America usually designates a subcontinent of the Americas containing Canada, the United States, and Mexico, and often Greenland, Saint Pierre et Miquelon, and Bermuda.
North America has been historically referred to by other names. Spanish North America (New Spain) was often referred to as Northern America, and this was the first official name given to Mexico.
Outside North America, at the beginning of the twentieth century, the whole American continent (North, Central, and South America as well as the Caribbean) was referred to simply as "America" or "The Americas", one of the "Five Continents" (the other four being Africa, Europe, Asia, and Oceania)