"Bartolome de las Casas (Col)"@en . . . "The \"Apostle of the Indians,\" Las Casas was a Spanish missionary who sailed with Columbus' third expedition. His efforts to protect the native population from slavery and abuse led him to speak on their behalf in the Spanish courts on several occasions."@en . "The \"Apostle of the Indians,\" Las Casas was a Spanish missionary who sailed with Columbus' third expedition. His efforts to protect the native population from slavery and abuse led him to speak on their behalf in the Spanish courts on several occasions."@en . .