Answer:
With the arrival of the Europeans to America, an intense ideological debate was unleashed on the nature of its inhabitants for their incorporation, expulsion or destruction of the territories that would be dominated by the Spanish Empire. This controversy was resolved with the rejection of the Crown to its slavery and, therefore, the incorporation of the aboriginal population as subjects with all their rights.
Thus, from the beginning of the sixteenth century, the laws of the Spanish Crown established that the aborigines would not be subjected to slavery, but to a regime of servitude called encomienda, by which they were given to Spanish encomenderos. The encomienda regime established that the aborigines had to work obligatorily for the encomendero, at the same time that the latter was obliged before the Crown of care and "evangelization" of the aborigines. One of the most famous critics of the encomienda system was Fray BartolomĂ© de las Casas, whose most representative work is the BrevĂsima relation of the destruction of the Indies.