Question

What role did the Rio Grande play in the U.S.-Mexican War?

A.Mexico believed the United States Army had invaded Mexican territory

B.Americans claimed Mexico started the war by attacking U.S. forces in Texas

C.Mexico and the United States claimed land north of the river

D.All the above

Answer 1

D.All the above

Step-by-step explanation:

Mexico claimed the Nueces River as its northern boundary, while the United States claimed the Rio Grande River, and the Mexican American War started on April 25, 1846, when both soldiers met at the Rio Grande and the Mexican army opened fire.