摘要:California has experienced enormous demographic changes throughout its history. Since the Gold Rush successive waves of immigrants have arrived from around the globe. Many such groups settled in certain regions and created communities; for example, there is a thriving Russian community in West Sacramento, a Vietnamese community in San Jose, and Hmong and Laotian communities in the San Joaquin Valley. Earlier immigrants established the Armenian and Basque settlements in the southern Central Valley, Japanese and Chinese neighborhoods in the San Francisco Bay Area, and Mexican and Central American communities throughout Southern and Central California.