Which of the following was a reason the U. S. went to war with Mexico in 1846?

to set the boundary of the Mexican border at the Rio Grande River

to make Northern abolitionists happy

to gain more territory from Mexico, including California

to help President Polk keep his campaign promises

The American-Mexican in 1846 happened because,

1) to set the boundary of the Mexican border at the Rio Grande River

a.that is my answer.

brainliest .

states

explanation:

as the old saying goes, all politics are local. state and federal governments affect our daily lives in numerous ways. yet, in our federal system, there is supposed to be a balance between federal and state power. as james madison envisioned it in federalist no. 51, “the power surrendered by the people” would be “divided between two distinct governments,” creating a balance of power that would enable the “different governments [to] control each other.”