Answer:
Presidios
Step-by-step explanation:
Spain built "presidios" on the borders of New Spain to convert Native Americans to Christianity. These presidios were internment facilities, where indigenous people were forced to abandon their cultural interests and religions and convert to Cirstianism, adopting Christian concepts that should be followed at any cost. This was done because the Spaniards believed that indigenous people were not evil, but rather ingenious souls that could be purified if forced into Christianity.