The Chamizal dispute was caused by a shift in which one of the principal rivers in the southwest United States and northern Mexico?
Rio Grande The Rio Grande ( or ; Spanish: Río Bravo del Norte , ] or simply Río Bravo) is one of the principal rivers in the southwest United States and northern Mexico (the other being the Colorado River). The Rio Grande begins in south-central Colorado in the United States and flows to the Gulf of Mexico. Along the way, it forms part of the Mexico–United States border. According to the International Boundary and Water Commission, its total length was 1896 mi in the late 1980s, though course shifts occasionally result in length changes. Depending on how it is measured, the Rio Grande is either the fourth- or fifth-longest river system in North America.
Rio Hondo (Southern New Mexico) The Rio Hondo is a 79 mi river in southern New Mexico which begins at the confluence of the Rio Bonito and Rio Ruidoso rivers near the town of Hondo, New Mexico. The river flows eastward through the Hondo Valley in the foothills of the Sierra Blanca and Capitan Mountains, roughly paralleling the route of U.S. Route 70 through the towns of Picacho and Tinnie. Near the community of Riverside the river passes through a deep canyon before entering the rolling hills west of Roswell.