If the question means USA for America then Mexico is on the southern border of the USA.
Southern state did not require school to be integrated
California is a northern state.
Brownsville in Texas is the southern most point.
Slavery!
Himachal Pradesh
Mexico is the southern neighbor of the U.S.
Mexico.
The closest southern neighbor would be Mexico.
USA is the closest southern neighbor of Canada.
alabama
Egypt.
South African Republic (SAR) is Botswana's southern neighbor. http://www.mapsnworld.com/world-map-political.html
Mexico is the southern neighbor of the U.S.
Colorado is bordered by New Mexico to the south. Denver is the capital city in Colorado.
Panjab
armenia