Mexico is directly south of and adjacent to the southwestern United States.
Mexico is directly south of and adjacent to the southwestern United States.
The United States of America is the only country that actually borders Canada.
There are many Spanish-speaking countries south of the United States, but the one that is adjacent is Mexico.
South Dakota is a state in the United States of America.
If it is summertime in the United States, what is it in South America
The country south of Ontario is the United States of America
South of the United States
mexico
United States
South America is a continent, not a single country. It is made up of 15 separate countries. If by America you mean the United States, the country closest to the south of the United States is Mexico.
Mexico is south of the United States.