What was the spanish system of enslaving native americans and taking there land

Explanation:

This the labor system that Spanish applied to Native American. I consisted in rewarding conquerors with a group of people. That's why this was called the communal slavery.

This system wasn't invented by the Spanish empire. First was used by Iberians, such that the Crown granted a person a certain number of native slaves, all these instructions were given under the Christian faith, justifying their actions with an spiritual way.

d is the right answer