Harman Patil

Territorial evolution of Arizona

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Territorial evolution of Arizona

The following timeline traces the territorial evolution of the U.S. State of Arizona.


  • 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 (Estado de Occidente), 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 (extralegal), 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 583.4 acres (2.361 km2), a part of the Cocopah Indian Reservation at 32°37′27″N 114°46′45″W, was ceded to the U.S. with controversy. Fain Banco (259 acres (1.05 km2)) at 32°31′32″N 114°47′28″W also became U.S. soil.
  • References

    Territorial evolution of Arizona Wikipedia

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