The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
The belief that it is the moral obligation to bring Christianity and civilization to the uncivilized is known as the colonization of Indians or the Evangelization of Indians.
That was the way of thinking of European explorers and conquerors when they arrived in the Americas. That was the way Spanish people and English colonists though.
They felt the whites were s superior race and they also considered the Native Indians as primitive people that had to be educated and evangelized in the Christian religion.