Before 1768: An enlargeable territorial map of California tribal groups and languages prior to European contact.Before 1768: An enlargeable map of the world showing the dividing lines for; Pope Alexander VI's Inter caeterapapal bull (1493), the Treaty of Tordesillas (1494), and the Treaty of Saragossa (1529).Spanish period: An enlargeable map of the United States after the Treaty of Paris in 1783.Spanish period: An enlargeable map of the United States after the Adams–Onís Treaty took effect in 1821.Mexican period: An enlargeable map showing Alta California Territory (black) after the 1824 Constitution of Mexico.Mexican period: Political divisions of Mexico as altered by Las Siete Leyes.American period: An enlargeable map of the United States after the Treaty of Guadalupe Hidalgo in 1848.American period: An enlargeable map of the United States after the Compromise of 1850.American period: The Nataqua Territory extension into California (light yellow), and Nevada's Roop County claim (light yellow area plus area outlined in green).American period: An enlargeable map of the United States as it has been since 1959.
Pedro Fages Expedition in 1781 was Sent to put down Yuma Indian rebellion in the Colorado River but lost control of the area to Indians, essentially closing the main overroute trail connection from Alta California to Mexico.
Friar Juan Martin Expedition 1804, Explores the southern Central Valley Region for new mission sites. Visits Salinan Tco'alam Village which he names Cholam Village
Friar Juan Martin Expedition 1805, Explores Lake Tulare Region for new mission sites. Visits Yokut Wowal Village which he names Bubal Village
Captain José Romero Expedition December 1823– January 1824 Discovers Valle de la Palma de Dios (Coachella Valley) exploring a route through the Sonoran Desert to Tucson Pueblo. attempting to establish the Landroute connection between California and Mexico abandoned since 1781.
The Boundary of the State of California shall be as follows:
Commencing at this point of intersection of 42d degree of north latitude with the 120th degree of longitude west from Greenwich, and running south on the line of said 120th degree of west longitude until it intersects the 39th degree of north latitude; thence running in a straight line in a south easterly direction to the River Colorado, at a point where it intersects the 35th degree of north latitude; thence down the middle of the channel of said river, to the boundary line between the United States and Mexico, as established by the Treaty of May 30th, 1848; thence running west and along said boundary line to the Pacific Ocean, and extending therein three English miles; thence running in a northwesterly direction, and following the direction of the Pacific Coast to the 42d degree of north latitude, thence on the line of said 42d degree of north latitude to the place of beginning. Also all the islands, harbors, and bays, along adjacent to the Pacific Coast.
Rio de Buen Guia (Colorado River) claim made by Hernando de Alarcon on behalf of Spain, September 1540
New Albion (Point Reyes) claim made by Sir Francis Drake on behalf of England, 1579
Las Californias claimed by Spain under the governance of the Viceroyalty of New Spain, 1768–1804
Northern California coast claimed by Ivan Kuskov on behalf of Russia, 1812[1]
Monterey, California held by Hippolyte Bouchard on behalf of Argentina (6 days), 1818[2]
Army of the Three Guarantees, 1821
First Mexican Empire, 1821–1823
First Mexican Republic, 1824–1835
California's Lone Star coup and declaration of independence, 1836
California Republic (25 days), 1846
Alta California administered by the United States as part of the Mexican Cession Unorganized territory, 1848–1850
California Statehood Act, September 9, 1850[3]
Territorial evolution of Arizona
Territorial evolution of Nevada
Territorial evolution of Oregon
History
Geography
Maps
