What caused the Spanish to successfully expand in California?

A) success of the mission system
B) agricultural advancements
C) mining opportunities
D) wealthy hacienda owners

Mission System

A network of missions established by European colonizers, particularly in the Americas, for the purposes of Christianizing, colonizing, and managing indigenous populations.

Hacienda Owners

Individuals or families owning large estates or ranches in Latin America, often with significant agricultural production, historically the social and economic elite.

Agricultural Advancements

Refers to the significant improvements in farming techniques and technologies that increase food production.