Alta California
On  the eve of the American Revolution, Spain sought to control the Pacific coast of today's United States against British and Russian incursions.

Juan Bautista de Anza, a third-generation frontier soldier of New Spain, shepherded 198 emigrants and their escorts and 1,000 head of livestock on the first overland colonizing expedition from Sonora, Mexico into Alta, or Upper, California. This expedition led to the founding of the Presidio of San Francisco and missions San Francisco de Asís (Mission Dolores) and Santa Clara de Asís.

Anza's expedition and the route it established are commemorated by the Juan Bautista de Anza National Historic Trail.

Anza's Expedition
The Significance
Anza successfully opened an overland route of emigration and supply from Sonora to the missions and settlements of Alta California. He confirmed that San Francisco Bay was a great harbor.

The soldiers and families that Anza escorted brought with them their language, traditions, and diverse New World Hispanic culture. The backgrounds of all soldiers and settlers were carefully recorded as espaÒol, mulatto or mestizo. Almost all the expedition members were born on this continent and had mixed European, African or Indian parentage. These influences changed the lives of the indigenous peoples and shaped the development of Arizona and California.
 

 

The route Anza opened supplied the settlements of Alta California long enough for them to become established. In 1781, the Yumas revolted against Spanish rule and closed the route during the rest of the colonial period. In later years, Anza's trail served the military, settlers, cattlemen, forty-niners and other desert travelers.

Additional Reading
Herbert Eugene Bolton, Editor, Anza's California Expeditions, 5 Volumes, Berkeley, CA, 1933.

Don Garate, Juan Bautista de Anza National Historic Trail, Southwest Parks and Monuments Association, 1994.

Richard F. Pourade, Anza Conquers the Desert, Copley Books, 1971.

To ensure their possesion of Alta California, Spain needed a new overland route originating in Sonora, Baja California.


 

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