High Quality Content by WIKIPEDIA articles! The Treaty of Guadalupe Hidalgo is the peace treaty, largely dictated by the United Statesto the interim government of a militarily occupied Mexico, that ended the Mexican-American War (1846 1848). From the standpoint of the United States, the treaty provided for the Mexican Cession, in which Mexico ceded 1.36 million km² (525,000 square miles; 55% of its pre-war territory, not including Texas) to the United States in exchange for US$15 million (equivalent to $313 million in 2006 dollars). From the standpoint of Mexico, the treaty included Texas as Mexico had never recognized Texan independence nor its annexation by the U.S.