<P> The Mexican -- American War , also known as the Mexican War and in Mexico the American intervention in Mexico , was an armed conflict between the United States of America and the United Mexican States ( Mexico ) from 1846 to 1848 . It followed in the wake of the 1845 American annexation of the independent Republic of Texas , which Mexico still considered its northeastern province and a part of its territory after its de facto secession in the 1836 Texas Revolution a decade earlier . </P>
<P> The Mexican -- American War , also known as the Mexican War and in Mexico the American intervention in Mexico , was an armed conflict between the United States of America and the United Mexican States ( Mexico ) from 1846 to 1848 . It followed in the wake of the 1845 American annexation of the independent Republic of Texas , which Mexico still considered its northeastern province and a part of its territory after its de facto secession in the 1836 Texas Revolution a decade earlier . </P>
when did the us army fight in the mexican american war
when did the us army fight in the mexican american war
from 1846 to 1848
from 1846 to 1848