-
Mexico gains independence from Spain
-
Americans are defeated at the Alamo
-
John Tyler becomes president
-
Americans and British agree to the Webster-Ashburton Treaty
-
United States annexes Texas
-
Mexican American War begins
-
Treaty of Guadalupe Hidalgo ends the Mexican American war
-
With the Gadsden Purchase the United States acquires an additional 30,00 square miles from Mexico