Answer:
The repartimiento system affected American Indians by forcing them to work, and allowing colonists to mistreat them.
Step-by-step explanation:
Repartimiento was a forced labor system existing in the colonial era in the Spanish colonies in South America, Central America and the Philippines, by which local tribes were forced to provide labor to work on plantations, road construction, mines and shipbuilding for little or no wages.
This system replaced the encomienda because of the drastic reduction in the number of Indians who died in large numbers from infectious diseases that the Europeans brought with them - smallpox, influenza, typhoid, and because Indians were fleeing.
After the number of slaves imported from Africa increased, this system was no longer used.