Answer:
Las Casas
Explanation:
Bartolome de Las Casas was a historian and protector of Natives Indians after becoming the first Bishop of Chiapas in the 16th century. His many writings describe the wrongs and horrors committed by the colonizers against the Native peoples. He tried to end the Encomienda system in America.
He uses words like slaves and ill-treating them, the bloody slaughter, and butcheries.