The first known inhabitants of California were the Asians. These inhabitants used a land bridge, which no longer exists, to travel along the Bering Strait to North America.
The inhabitants settled in California and other places nearly 10,000 years ago, placing themselves among the areas varied climates and geographical regions. During this time period, the climate was generally warmer throughout the year, making travel much easier. The state's varied topography, including mountains and deserts, kept indigenous groups from traveling large distances at a time. The topography also separated native people, which led to the development of groups with their own lifestyles and cultures, including the Hupa, Pomo and Maidu.