History of the United States I / Unit 11 USH1 1550 short lesson, about 20 seconds
The Mexican Cession
Captions available
The idea
Mexico ceded nearly half its land, comprising the present states of California, New Mexico, Arizona, Nevada and Utah, and portions of Colorado and Wyoming.
In practice
Mexico also recognising the Rio Grande as the border.
Where people slip
The boundary claim that started the war was conceded in the treaty that ended it.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Something wrong in this lesson? Flag it · Sources for History of the United States I