User:Patziteypaz/Tri-Valley

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The Tri-Valley area is grouping of three valleys in the East Bay region of California's Bay Area. The three valleys are Amador Valley, San Ramon Valley, and Livermore Valley. The Tri-Valley encompasses the cities of Dublin, Livermore, Pleasanton and San Ramon, the town of Danville and the CDPs of Alamo, Blackhawk and Diablo. The area is known for its Mediterranean climate, wineries, and nature. (The majority of the populations reside in the valley floors, with ranch and agricultural lands i the upland areas.) It is a primarily suburban area with a population of about 361,000. It offers more affordable living accommodations than the cities (along the San Francisco Bay) of San Francisco and San Jose.

It might be more illustrative to add the notion that these vallies are actually a mix of rural areas upgainst high density in the valley floors.

A more broad way of contrasting the valley with the bay side, as opposed to SF and SJ as examples.

History
The Ohlone tribe settled the area circa 2000 BC, particularly in the northern part of Pleasanton. (SOURCE?)

You could talk about the wider language group, the nuber of tribes, and how they had semipermanent villages along the valley flors adjacent river drainages and seasonal gathering in the upland hills.

In AD 1772, however, Spanish settlers involved with the nearby mission work at Mission San Jose restructured the Ohlone way of life. https://www.nps.gov/goga/learn/historyculture/upload/Chapter-9.pdf (Make this a source not a link)

The area began to be developed when the Gold Rush ended. During this period, the area went from being marshland to agricultural. (Where are the sources?)