The correct answer to this question is the following.
Given his recommendation for the improvement of Indian and Spanish relations, Bartolomé de Las Casas would have most in common with another reform-minded individual such as Martin Luther.
Bartolomé de Las Casas (1484-1566) was a Dominican Frair from Spain who was decided to defend the rights of the Native Indians in South America. For the noble labor he did, he is known as the Defender of American Indians. Besides preaching the catholic teachings, he was an advocated to defend the rights of the Indians.