The Spanish established missions in their colonies for several reasons, including the following:
A. Spread the Roman Catholic Faith - One of the primary motivations for establishing missions was to evangelize and convert Indigenous peoples to Christianity.
B. To help the Spanish - Missions provided support for Spanish settlers and explorers, helping to establish Spanish presence in new territories and securing loyalty to the Spanish crown.
D. More easily govern the Native Americans - Missions often served as centers of administration and governance, allowing the Spanish to exert control over local populations and integrate them into colonial systems.
C. Learn the Spanish language is not typically cited as a primary reason for establishing missions, though it may have been a byproduct of the interactions between missionaries and Indigenous peoples.
In summary, the most relevant reasons would be A, B, and D.