Territorial evolution of New Mexico



The area currently occupied by the U.S. State of New Mexico has undergone numerous changes in occupancy and territorial claims and designations. This geographic chronology traces the territorial evolution of New Mexico.

Timeline

 * Historical territorial claims of Spain in the present State of New Mexico:
 * Nueva Vizcaya, 1562–1821
 * Santa Fe de Nuevo México, 1598–1821
 * Treaty of Córdoba of 1821
 * Historical territorial claims of France in the present State of New Mexico:
 * Louisiane, 1682–1764
 * Treaty of Fontainebleau of 1762
 * Historical territorial claims of Spain in the present State of New Mexico:
 * Luisiana, 1764–1803
 * Third Treaty of San Ildefonso of 1800
 * Historical territorial claims of France in the present State of New Mexico:
 * Louisiane, 1803
 * Vente de la Louisiane of 1803
 * Historical territorial claims of Mexico in the present State of New Mexico:
 * Santa Fé de Nuevo México, 1821–1848
 * Treaty of Guadalupe Hidalgo of 1848
 * Historical territorial claims of the Republic of Texas in the present State of New Mexico:
 * Disputed territory east of the Rio Grande, 1836–1845
 * Texas Annexation of 1845
 * Historical political divisions of the United States in the present State of New Mexico:
 * Unorganized territory created by the Louisiana Purchase, 1803–1804
 * District of Louisiana, 1804–1805
 * Territory of Louisiana, 1805–1812
 * Territory of Missouri, 1812–1821
 * Territory of Arkansaw, 1819–1836
 * Adams–Onís Treaty of 1819
 * Disputed territory created by the Texas Annexation, 1845–1850
 * Compromise of 1850
 * Mexican–American War, 1846–1848
 * U.S. Military Province of New Mexico, 1846
 * U.S. Provisional Government of New Mexico 1846–1850
 * Unorganized territory created by the Treaty of Guadalupe Hidalgo, 1848–1850
 * State of Deseret (extralegal), 1849–1850
 * Proposed state of New Mexico, 1850
 * Territory of New Mexico, 1850–1912
 * Gadsden Purchase of 1853
 * American Civil War, 1861–1865
 * Arizona Territory (CSA), 1861–1865
 * State of New Mexico since 1912