1. Military Leaders
1.1. James Polk: He was the U.S President and he thought we would get New Mexico, California and Texas if we went to war with Mexico.
1.2. Stephen Kearney: He was the frontier officer for the U.S and he lead the army to seize New Mexico and California
1.2.1. Robert E. Lee: He worked with Grant and he was WinField Scott's chief.
1.2.2. Zachary Taylor: He was a solider and commanded troops and became a full fledged war.
1.2.2.1. John C. Fremont: Was a American explorer and solider and soon became a president.
1.2.2.1.1. Winfield Scott: He was a general and he was against Polk's policies toward Mexico.
1.2.2.2. Santa Anna: She was a Mexican Politician and general. She also defended independence for Mexicans.
1.2.2.2.1. Ulysses S. Grant: He fought in the Mexican war and became a hero to the U.S. Also, when he became president he tried to fix the North and South.
2. Important Places
2.1. Rio Grande: The border stopped at Nueces River which was 100 miles northeast from the river. Also, it became the southern boundary and Mexican calvary attacked a fort on the river.
2.1.1. New Mexico: It was uneventful during the begging of the mexican American war.
2.1.1.1. Mexico City: Winfield Scott raised the American flag which meant Mexico city was part of the United States.
3. Important events
3.1. Guadalupe Hidalgo: A treaty between Mexico and America that established peace and friendship
3.1.1. Manifest Destiny: It encouraged America to expand their territories and take over Mexican territories as well.
3.1.1.1. Gadsden purchase:Established the borders for the lower 48 states.
3.1.1.1.1. Veracruz:It was a Mexican 20 day siege and the Mexican were surrounded by the U.S army when they arrived.
3.1.2. Declaration of War: President Polk approved to declare the war in 1846. Which caused Mexico to lose nearly half their territory.