Answer: Bartolomé de Las Casas was born in Spain, he was a historian and a Dominican missionary.
He was the first o talk about the oppression of the indigenous people, and the first who wanted the abolition of slavery, by the Europeans.
Even if his work was a influence for other works, he failed to stay the progressive enslavement.
The Brevísima relación de la destrucción de las Indias (A Short Account of the Destruction of the Indies) had an immediate impact in Spain. The polemic was likely a key factor in King Charles I’s decision to issue the “New Laws” in 1542.