The Chattahoochee on the Southwestern Border with Alabama
Read more: What_two_rivers_border_Georgia
the saint Mary's river
Rio Grande makes up most of the southern border of the United States, it also makes up most of the northern border of Mexico
Red river is part of Oklahoma's southern border.
The Zambezi River is on the southern border of Zambia.
The Ohio River
The Ohio River formed the southern border of the Northwest Territory.
The Red River forms most of Oklahoma's southern border with Texas east of the panhandle. It is also known as the Red River of the South.
GA gained land stretching all the way down to the st. Mary's river ( where our southern border is today)
The southern border of Indiana is the OHIO River (which separates it from Kentucky.)
The Red River.
Ohio River
the red river in between OK and TX.