The Treaty of Guadalupe Hidalgo specified the major consequence of the war: the forced Mexican Cession of the territories of Alta California and New Mexico to the U.S. in exchange for $18 million.
Perjanjian Guadalupe Hidalgo mencantumkan perubahan besar akibat perang ini, yaitu penyerahan wilayah Alta California dan New Mexico kepada AS dengan imbalan $18 juta.