How did Juan Gines de Sepulveda compare Native Americans and the Spanish

He believed that the Spanish was the superior race.

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.

i believe the answer is d. it was not uncommon for people to faint or even convulse at these high-energy meetings.

it refers to race, i am pretty sure this was a popular term in nazi germany or something.