In the 1760s, the Spanish came onto Kumeyaay land. They wanted to teach the Kumeyaay about the Christian religion and the European lifestyle. To do that, they built the Mission San Diego, which was a church, a school, and a village.all in one. However, the Kumeyaay did not like being told what to do. In 1775, the Kumeyaay fought the Spanish at Mission San Diego. They set some buildings on fire and killed a priest.