The correct response is:
Each system developed as a way of ensuring labor for colonizers. Each system was based on race, which has had long-term effects on the structure of the societies of the Americas.
Chattel slavery and the encomienda system were both systems employed by European colonizers to exploit labor in the Americas. Chattel slavery primarily involved the forceful enslavement of Africans, while the encomienda system involved granting Spanish settlers the rights to enslave Indigenous people under the guise of protection and Christianization. Both systems were fundamentally linked to race and led to significant social, economic, and cultural impacts that can still be observed in the societal structures of contemporary America.