<P> The 1848 Treaty of Guadalupe Hidalgo , forced onto the remnant Mexican government , ended the war and specified its major consequence , the Mexican Cession of the northern territories of Alta California and Santa Fe de Nuevo México to the United States . The U.S. agreed to pay $15 million compensation for the physical damage of the war . In addition , the United States assumed $3.25 million of debt already owed earlier by the Mexican government to U.S. citizens . Mexico acknowledged the loss of their province , later the Republic of Texas ( and now the State of Texas ) , and thereafter cited and acknowledged the Rio Grande as its future northern national border with the United States . Mexico had lost over one - third of its original territory from its 1821 independence . </P>
<P> The 1848 Treaty of Guadalupe Hidalgo , forced onto the remnant Mexican government , ended the war and specified its major consequence , the Mexican Cession of the northern territories of Alta California and Santa Fe de Nuevo México to the United States . The U.S. agreed to pay $15 million compensation for the physical damage of the war . In addition , the United States assumed $3.25 million of debt already owed earlier by the Mexican government to U.S. citizens . Mexico acknowledged the loss of their province , later the Republic of Texas ( and now the State of Texas ) , and thereafter cited and acknowledged the Rio Grande as its future northern national border with the United States . Mexico had lost over one - third of its original territory from its 1821 independence . </P>
when did the us acquire california from mexico
when did the us acquire california from mexico
1848
1848