Answer:
The encomienda was a socioeconomic institution through which a group of individuals were obliged to give back to another in work, species or by other means, to supposedly enjoy a good or benefit they had received. The institution of the clientele was established in Roman Europe from the lower Empire to the beginning of the Modern Age. Thus, there was a dependency relationship whereby the strongest gave protection to the weakest in exchange for committing to maintain fidelity and deliver certain services.
The charge resulted in abuse and violence, in some cases, a kind of covert slavery. These behaviors were denounced by authentic Spanish humanists, such as Fray Antonio de Montesinos and Fray Bartolomé de las Casas. Fray Matías de Paz reflected from the Christian point of view while the jurist López de Palaci y Rubios contributed a legal point of view. Bartolomé de las Casas would be attended by Carlos I and Felipe II.