The Rio Grande forms part of the border between the US and Mexico.
There are 2 rivers I can think of that borders Canada and New York state. The St Lawrence River borders most of Ontario and New York east of Lake Ontario, and you also have the Niagara River which boarders at Niagara Falls
Both the St Lawrence and Niagara Rivers do
Bordering Texas and Louisiana is the Sabine River, the Red River borders Texas and Oklahoma, and between Texas and New Mexico/Mexico is the Rio.
Tigris and Euphrates Rivers.
The Rio Grande, Red and Sabine rivers and the Gulf of Mexico.
The Rio Grande is between Texas and Mexico; the Red River (Mississippi Watershed) is between Texas, Oklahama, and Arkansas; and the Sabine River is between Texas and Louisiana.
The United States of America has two international land borders; one with Canada to the north (US-Canadian Border) and another with Mexico to the south (US-Mexico Border).Also the US Federal government considers that an "invisible non-land" border exists between the United States and (1) Russia (2) Cuba and (3) the Bahamas. However this is debatable as borders are traditionally defined by rivers, lakes or land divisions; not large bodies of water like seas or oceans.
lake superior, lake erie, lake ontario, and lake huron (4 of the 5 great lakes) the other borders are land borders (49th parallel) and alaska borders the yukon and British columbia via a land border =============================================================================== The International Boundary between US and Canada runs through several rivers and over 50 lakes.
Rio Grande (Mexico), Red River (Arkansas, Oklahoma), Sabine River (Louisiana)
The Rio Grande forms part of the border between the US and Mexico.
Issues such as definitions of borders between national and regional government. Also when resources flow between borders (rivers and oil deposits) there is a question of profiting rights.