The primary reasons the Spanish established missions in their colonies include:
A. Spread the Roman Catholic Faith - One of the main objectives of Spanish missions was to convert Indigenous people to Christianity, particularly Roman Catholicism.
D. More easily govern the Native Americans - Establishing missions allowed the Spanish to create settlements that could facilitate governance and control over Indigenous populations.
While options B (To help the Spanish) and C (Learn the Spanish language) may have been indirectly related outcomes, they were not primary reasons for the establishment of missions. The focus was mainly on religious conversion and governance.