Answer:
They provide a habitat for fish, frogs and other animals.
Peer Pressure!!! Nah I’m kidding but really I don’t know. The app is forcing me to answer my first question
By giving them freedom of religious practice.
It would be the Hacienda system. I’m not sure if your talking about Spanish slavery but if you are it’s the Hacienda system because it functioned by keeping the people working on the land in debt in some way or another so that they could not leave.