id author title date pages extension mime words sentences flesch summary cache txt en-wikipedia-org-1552 Mexican–American War - Wikipedia .html text/html 28798 3008 70 Mexico's military and diplomatic capabilities declined after it attained independence from Spain in 1821 and left the northern one-half of the country vulnerable to attacks by Comanche, Apache, and Navajo Native Americans.[17] The Comanche, in particular, took advantage of the weakness of the Mexican state to undertake large-scale raids hundreds of miles into the country to acquire livestock for their own use and to supply an expanding market in Texas and the U.S.[18] In 1846 alone, the presidency changed hands four times, the war ministry six times, and the finance ministry sixteen times.[37] Despite that, Mexican public opinion and all political factions agreed that selling the territories to the United States would tarnish the national honor.[38][39] Mexicans who opposed direct conflict with the United States, including President José Joaquín de Herrera, were viewed as traitors.[40] Military opponents of de Herrera, supported by populist newspapers, considered Slidell's presence in Mexico City an insult. The war was fought by regiments of regulars and various regiments, battalions, and companies of volunteers from the different states of the Union as well as Americans and some Mexicans in California and New Mexico. ./cache/en-wikipedia-org-1552.html ./txt/en-wikipedia-org-1552.txt