It was preceded by a dispute in the Mesilla Valley and its underlying cause was visible when one side attempted to purchase the Isthmus of Tehuantepec, although the other side had already chosen Don Jose de Garay to build colonies there. Its namesake was the former president of the South Carolina Railroad Company who hoped to build a southern railroad to the Gulf of California. It consisted of land south of the Gila River and was so unpopular for one side that it caused 
It was preceded by a dispute in the Mesilla Valley and its underlying cause was visible when one side attempted to purchase the Isthmus of Tehuantepec, although the other side had already chosen Don Jose de Garay to build colonies there. Its namesake was the former president of the South Carolina Railroad Company who hoped to build a southern railroad to the Gulf of California. It consisted of land south of the Gila River and was so unpopular for one side that it caused Santa Anna to be removed as dictator. Largely seen as an extension of the earlier Treaty of Guadalupe-Hidalgo this is, FTP, what 1854 US acquisition of territory in southern Arizona and New Mexico?
It was preceded by a dispute in the Mesilla Valley and its underlying cause was visible when one side attempted to purchase the Isthmus of Tehuantepec, although the other side had already chosen Don Jose de Garay to build colonies there.
{Gadsden} Purchase