Final answer:
The Spanish mission system in colonial America had the most success at converting Indians.
Step-by-step explanation:
The mission that seemed to have the most success at converting Indians was the Spanish mission system in colonial America. These missions were established by Spanish colonizers with the purpose of converting Native Americans to Christianity and integrating them into Spanish colonial society. One example of a successful mission is the Mission San Juan Capistrano in California, where Native Americans were taught farming techniques, crafts, and Catholicism.
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