Before 1769, California was the most linguistically diverse place in North America and one of its most densely populated, with hundreds of small independent nations rather than empty wilderness. The acorn economy, deliberate fire and salmon fed a managed abundance. Spanish missions and Mexican ranchos then took the fertile coast first, so that later 'Indian land' began as the leftover margin.
Pre-contact population estimates range from about 133,000 (Kroeber) to about 310,000 (Cook), and most modern scholars favor a figure well above Kroeber's. Language counts range from about 60 to 90 depending on how language and dialect are drawn.