Answer:
He believed that the Spanish was the superior race.
Step-by-step explanation:
European colonizer often used this type of thinking in order to justify the treatment that they gave to the people from another country . The spanish empire in the often position themselves as the people who were chosen by God in order to spread God's words and rule over the world.
Juan Gines de Sepulveda was no exception to this.
He was a famous spanish philosopher who was popular for advocating the concept of colonial slavery. He often referred to native Americans and black people as "natural slaves" whose life had no purpose before the European came to their land and took control.