Final answer:
The Spanish missions in the San Antonio area were successful due to the trust-building efforts of the missionaries, the economic opportunities they provided, and the religious guidance they offered.
Step-by-step explanation:
The Spanish missions in the San Antonio area were successful for several reasons. Firstly, the missionaries, who were predominantly Roman Catholic, were able to win the trust of the Native Americans by providing them with education and understanding their customs and beliefs. This helped bridge the gap between the two societies and fostered a positive relationship.
Secondly, the missions provided opportunities for economic growth and trade. The missions served as centers for agriculture, industry, and commerce, which contributed to their success. The Native Americans living in and around the missions were taught new farming techniques, which improved their agricultural production and helped sustain the missions.
Lastly, the missions provided religious and spiritual guidance to the Native Americans. The missionaries worked to convert the native population to Catholicism and instill Christian values. This religious aspect of the missions played a significant role in their success.