California was first discovered in 1533 when it was thought to be an island named after Queen Califa. It was later discovered to be a peninsula. California has a diverse geography due to tectonic plate collisions, including the highest and lowest points in the continental US. Native Americans lived in California in many linguistic groups with varied diets depending on their locations. In 1848, the discovery of gold started the California Gold Rush, causing a population boom and lawlessness. Racial issues emerged, with Mexicans disproportionately lynched. Infrastructure development began in the 1890s to address water issues, led by engineers who built aqueducts from rivers like the Owens and Colorado.