Loss of Land: As Europeans settled in California, they took over land that had traditionally been used by Native Americans. This loss of land led to conflict and displacement. In addition, the introduction of new farming practices and livestock grazing disrupted the natural environment and further reduced the resources available to Native Americans.
Cultural Disruption: The arrival of Europeans also led to significant changes in Native American culture and society. Missionaries sought to convert Native Americans to Christianity and suppress their traditional beliefs and practices. In addition, the introduction of alcohol and firearms led to social problems and conflict.
Violence: Native Americans in California faced violence from a variety of sources, including settlers, miners, and soldiers. In some cases, Native Americans were massacred or forced into slavery. In other cases, they were subjected to violence in the form of physical and sexual abuse.
Genocide: The combination of disease, loss of land, cultural disruption, and violence led to the genocide of many Native American tribes in California. In some cases, entire tribes were wiped out. In other cases, the survivors were forced to live in poverty and isolation.