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.

because the vietnam war was fought in an especially brutal and untraditional way