The Mexican-American War | AP US History | Khan Academy

Keep going! Check out the next lesson and practice what you’re learning: https://www.khanacademy.org/humanities/us-history/civil-war-era/sectional-tension-1850s/a/compromise-of-1850 What were the causes and effects of the Mexican-American War? In this video, Kim Kutz Elliott discusses how Manifest Destiny and the annexation of Texas brought on the war, as well as how the war affected US politics and the existing residents of the Mexican Cession.