San Jose served as a strategic settlement along El Camino Real, connecting the military fortifications at the Monterey Presidio and the San Francisco Presidio, as well as the California mission network.
In 1800, due to the growing population in the northern part of the Californias, Diego de Borica, Governor of the Californias, officially split the province into two parts: Alta California (Upper California), which would eventually become a U. state, and Baja California (Lower California), which would eventually become two Mexican states.
Only in 1769 was Northern California finally surveyed by Spanish authorities, with the Portolá Expedition.
On 11 July 1846, with the onset of the Mexican–American War, Captain Thomas Fallon conquered San Jose in the name of the Bear Flag Revolt for the California Republic, officially ending Mexican rule in Alta California.
Major global tech companies including Cisco Systems, e Bay, Cadence Design Systems, Adobe Systems, Pay Pal, Brocade, Samsung, Acer, and Western Digital maintain their headquarters in San Jose, in the center of Silicon Valley.
The Tamyen spoke Tamyen language of the Ohlone language family.
That year, King Carlos III of Spain approved an expedition by Juan Bautista de Anza to survey the San Francisco Bay Area, in order to choose the sites for two future settlements and their accompanying mission.
First he chose the site for a military settlement in San Francisco, for the Royal Presidio of San Francisco, and Mission San Francisco de Asís.