U.S. Soldiers clash with Mexican troops.

Between Nueces river + Rio Grande River.

April 24, 1846

May 11, 1846

President James K. Polk asks Congress to declare war.

*Mexico passed the boundary and killed Americans.

May 13, 1846

September 1847

February 2, 1848

The United States declare war on Mexico.

It offered a chance to "Remember the Alamo" and to settle arguments over the men of the Mier expedition.

General Winfield Scott and his army land in Molino del Ray.

His troops faced heavy opposition by young Mexican forces outside Mexico City.

The treaty of Guadelupe Hidalgo is signed; the war ends.

Mexico agreed that Texas is part of the U.S. and Mexico surrendered the land between Texas and the Pacific Ocean.

Texas History timeline