Question

During this time. The US and Mexico disagreed over which river with serve as a boundary what river did Mexico calm was and always have been there boundary?

Answer 1

Nueces River

Step-by-step explanation:

Don't get this mistaken for the Rio grande, This river was Mexico's choice of boundary, the United States claimed The Rio Grande as their boundary. In 1845 was when the conflict began, it all started because the U.S annexed Texas as a state and that is when Mexico claimed that the "new" border was between Texas and Mexico.

Hopes this helps !

Answer 2

Texas used the Adams-Onís as a boundary line to the U.S., but decided to set the Rio Grande (called the Río Bravo del Norte in Mexico) as its boundary line to Mexico.