The Neuces River.
The border between Mexico and the United States is the Rio Grande River.
Which river did Mexico claim was the border between Texas and Mexico
Before the Mexican/American War, Mexico claimed it was the Nueces river, while Texans claimed it was the Rio Grande.
the Mexican Americans were fighting for the border between TX and Mexico
Nueces River. This is one of the "official" reasons for the Mexican-American War.
After the Texas Annexation (when America admitted Texas into the Union as the 28th state), America claimed that Mexico was trespassing onto American soil. America claimed that the border between Mexico and The United States was the Rio Grande River. However, Mexico said it was the Nueces River. Many people believe that America claimed that the border was the Rio Grande River so they could easily acquire more land from Mexico.
The river the United States claimed was the border between Texas and Mexico was the Rio Grande.
The border argument before the Mexican-American war was over which river divided Mexico from Texas. The Americans claimed that it was the Colorado river, but that was not the case. The Americans crossed into Mexico and were fired upon. America then declared war, this resulted in the Mexican-American war which was won by America and as a result took much more land.
The length of the border between the United States and Mexico is approximately 1,954 miles.
The U.S. claimed the Rio Grande as the border between Texas and Mexico, while Mexico asserted that the border was the Nueces River. This disagreement over the border contributed to tensions that ultimately led to the Mexican-American War in 1846. The conflict resulted in significant territorial changes, with the U.S. eventually formalizing the Rio Grande as the border in the Treaty of Guadalupe Hidalgo.
The Rio Grande-
Mexico claimed the Rio Grande River as their border.