It was composed of war captives and Christian youths pressed into service; all the recruits were converted to Islam and trained under the strictest discipline. It was originally organized by Sultan Murad I. The Janissaries gained great power in the Ottoman Empire and made and unmade sultans.
The answer is B. Three days
The correct answer is B. Native American.
As the earliest ancestors of Native Americans, they can be considered to be descended from the Paleo-Indians. They shared the use of fire and trained dogs with their Asian counterparts, but grazing animals, domesticated plants, and the wheel did not seem to be Old World innovations.