Answer:
You may ask how the Spanish Crown would use the humbleness and kindness of the Indians to Christianize them.
Step-by-step explanation:
Raphael Sanchez was an influential noble in the Spanish Crown. In the letter to him, Columbus describes his discovering - America. In a precise description, Columbus talks about Nature and natural resources, but he gives special attention to the natives. He describes them as "kind", "good", and "humble". Based on that, the question is: how the Spanish Crown would use these features in advance to Christianize them?