Territorial evolution of Arizona

Timeline

• Historical territorial claims of Spain in the present State of Arizona:
• * Nueva Vizcaya, 1562–1821
• * Santa Fé de Nuevo Méjico, 1598–1821
• * Sonora y Sinaloa, 1732–1821
• ** Treaty of Córdoba of 1821
• Historical territorial claims of Mexico in the present State of Arizona:
• * Santa Fé de Nuevo México, 1821–1848
• * Sonora y Sinaloa, 1824–1830
• * Sonora since 1830
• ** Treaty of Guadalupe Hidalgo of 1848
• ** Gadsden Purchase of 1853
• Historical political divisions of the United States in the present State of Arizona:
• * Unorganized territory created by the Treaty of Guadalupe Hidalgo, 1848–1850
• ** Compromise of 1850
• * State of Deseret, 1849–1850
• * Territory of New Mexico, 1850–1912
• ** Gadsden Purchase of 1853
• * American Civil War, 1861–1865
• ** Arizona Territory (CSA), 1861–1865
• * Territory of Arizona, 1863–1912
• ** North-western corner of the Arizona Territory is transferred to the State of Nevada, 1867
• * State of Arizona since February 14, 1912
• * Mexican Boundary Exchanges: In 1927 under the Banco Convention of 1905, the U.S. acquired two bancos from Mexico at the Colorado River border with Arizona. Farmers Banco, covering, a part of the Cocopah Indian Reservation at, was ceded to the U.S. with controversy. Fain Banco at also became U.S. soil.