The sun dance was the marriage ceremony of the sioux a four-day religious ceremony to make pledges to the great spirit a religious ritual designed to drive the whites away from native american land the celebration dance following warfare among the plains nations

The correct answer is "A four-day religious ceremony to make pledges to the Great Spirit".

The Sun Dance is one of the most important and renowned ceremonies practiced by pretty much all Natives of the Plains region and it represented a renewal of the bond between the tribes and the earth spirit.

The ceremony started at sunrise and it involved relentless dancing while looking at the Sun for four straight days. Short breaks were allowed, but none of the participants could eat or drink in between. They would make sacrifices, specific pledges and praying for the welfare of the community.

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