North America is a continent with only three countries on it proper, the second least after Australia. This dubious honor results mainly from the fact that rapid expansion by the continent's domineering United States of America pushed most of the natives and European colonizers off hundreds of years ago. Now Canada is consigned to the mostly frozen north of the continent while Mexico occupies the south. When talking about "America", the term mainly refers to the United States. The Americans have a big ego like that.