In the social hierarchies of the aztec and inca, which group was expected to support the upper class with their labor?

Even though both ww1 and ww2 were in many ways the same conflict with basically the same countries facing off against each other, the way each war started was significantly different. the question is how what were the differences on how they started

Which fact would this be, and how might you verify the truth?

Which phrase best completes the diagram? apex