The Chamizal dispute was caused by a shift in which one of the principal rivers in the southwest United States and northern Mexico?
Chamizal dispute The Chamizal dispute was a border conflict over about 600 acres on the Mexico–United States border between El Paso, Texas, and Ciudad Juárez, Chihuahua. It was caused by a shift in the Rio Grande, as a survey presented in 1852 marked differences between the bed of the Rio Grande (in Spanish: "Río Bravo del Norte" ) and the present channel of the river. The Chamizal was once the only link between El Paso and Ciudad Juárez and tensions over the territory during the historic Taft–Diaz summit almost resulted in the attempted assassination of both presidents on October 16, 1909.
League of the Southwest The League of the Southwest was a 1919 alliance formed among U.S. states in the basin of the Colorado River with the intention of promoting development, in particular irrigation of cropland for agriculture, along the river. In 1921, two years later, the United States Congress authorized the states to negotiate an agreement for allocation of the river water, leading to the 1922 Colorado River Compact.