Santa Cruz History

Pimería Alta (upper land of the Pimas) was a province or region referred as Spanish Colonial Mexico encompassing what is now southern Arizona and northern Sonora. The area took its name from the Pima and closely related O'odham (Papago) indigenous peoples residing in the Sonoran Desert. Pimería Alta was the site of the Spanish missions in the Sonoran Desert established by Father Kino in the late 17th century.

Gadsden was appointed U.S. Minister to Mexico by President Franklin Pierce with instructions of his own design to buy from Mexico enough territory for a railroad to the Gulf of California. The Gadsden treaty gave to the United States freedom of transit for mails, merchandise and troops across the Isthmus of Tehuantepec, and provided for a readjustment of the boundary established by the treaty of Guadalupe Hidalgo.

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