1. Mexican-American War

2. Texas  Mexicans independence (1821) opened the door for settlers & traders to move into the Mexican territories  The independence of Texas (1836) many created problems for both the U.S. & Mexico  Slavery issue, & the fear of war slowed the annexation process  James Polk, an expansionist, finished the process of annexation of Texas  December 1845, Texas became a state

3. The War  Why did Polk say we needed to go to war?  John Slidell, was offering $30 million for the territory of California & New Mexico  Zachary Taylor, moved troops to Texas to claim the Rio Grande River as the true border between the U.S. & Mexico.  A small skirmish ensued and gave Polk the evidence to declare war. (May 13, 1846)

4. California  John C. Fremont  Fremont Cannon  Led settlers into California to cause trouble  William B. Ide launched an attack against the Mexicans in Sonoma (NorCal)  Easily won, and claimed the area as the “Bear Flag Republic”  By 1847, U.S. force controlled most of California & New Mexico

5. The War in Mexico  Taylor & Winfield Scott began marching U.S. forces into Mexico  Both took on forces led by Lopez de Santa Ana  Many Mexican victories, but not large enough to stop the American forces.  Took Mexico City on Sept 14 th, 1847.

7. Battle of Chapultepec

8. Monumento a Las Niños Héros

9. Winfield Scott in Mexico City

10. Treaty of Guadalupe Hidalgo  U.S. wanted to annex most of Mexico  Ended up with 2/5 of northern territory (Texas, California, New Mexico)  Gadsen Purchase: U.S. bought the remainder of the New Mexico (present day Arizona and Southwestern New Mexico) for $10 million  Created large bitterness from many Mexicans.

11. Treaty of Guadalupe Hidalgo