Answer:B.A new division of labor and, ultimately, the emergence of classes
Explanation: The Native Americans are known as the American Indians,the indigenous Americans etc. The main occupation of these tribes of Americans is Agriculture.
They are very used to cultivation of Crops and rearing of Animals.
Agriculture is a highly labor intensive venture which requires a large number of persons in order to accomplish tasks. The consequence of Native Americans sole dependence on Agriculture as a means of survival is it created a new division of labor through which farmers were able to handle tasks and, ultimately, the emergence of classes.