"In 1846, the U.S. incited Mexico to war"

Anzaldúa's account of the events leading up to the Treaty of Guadalupe Hidalgo--in which Mexico was effectively forced to cede more than half of its land to the U.S.--is generally accurate.  These events are central to understanding the feelings of many Mexican-Americans (and also many North American Indians) that their historic homeland was usurped.  But this chapter of U.S. history is little known to most people.  See the treaty and a summary online at the Hispanic Reading Room of the Library of Congress.  This map shows the area (in white) transferred from Mexico.

 

The Mexican Cession--Mexican View (500 * 441)
Public DomainThe Mexican Cession--Mexican View