Central America is.
No. Cuba is directly south of Florida
Mexico is directly south of and adjacent to the southwestern US.
Mexico is directly south of the United States.
If you are referring to the United States, Mexico is directly south.
Mexico is directly south of and adjacent to the southwestern United States.
Mexico is directly south of Texas.
Mexico is directly south from Arizona.
Canada to the north and Mexico to the south.
Directly South: south of Texas, New Mexico, Arizona, Nevada, California.
Mexico is south of the United States.
Mexico is south of the United States.
Mexico borders the US along much of the southwest.