Venta de La Mesilla / Gadsden Purchase 1853

The ink dried on the Mexican-American treaty for the Venta de La Mesilla, known as the Gadsden Purchase in the US, on December 30, 1853.  Under this treaty, the US government purchased Mexican territory in Arizona and New Mexico along the international border. This purchase was made several years after the Mexican American War, during which the US had stolen almost one-third of the Mexican nation by force. The purpose of the treaty was to establish an international railroad through the best topography, and to delineate the border after the Mexican-American War.