What social structure did the aztecs and the incas have in common

One of the observations by someone who was present for roosevelt's speech was, "its clarity, logic, and sincerity struck us." quote one example from the text that you would describe as clear, logical, or sincere. explain the language in your chosen quote correctly, and tell why it can be considered clear, logical, or sincere.

What is the main social system that existed in ancient china?

Which of the following was a bold new idea expressed in the declaration of indenpendnce?