On this day, March 29, in 1847

Mexican forces surrendered at Veracruz and the U.S. flag was raised. American troops then continued to march inland, eventually capturing Mexico City and ending the 2-year Mexican-American war. America then established the Rio Grande River as the U.S.-Mexican border, and in the process gained control of Texas, California, Nevada, Utah as well as parts of Colorado, Arizona, New Mexico, and Wyoming. Although the Mexicans living in these territories were offered citizenship, they continued to face widespread oppression.