<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>
the land gained by the united states as a result of the mexican american war is known as the
the land gained by the united states as a result of the mexican american war is known as the
northern territories of Alta California and Santa Fe de Nuevo México
northern territories of Alta California and Santa Fe de Nuevo México