The correct answer is "nobility, commoners."
The Aztec social order had four classes: nobility, commoners, serfs, and slaves. The ones who could own land were the nobility and the commoners.
The Aztec civilization was one of the most important during the Mesoamerican times, before the Spanish conquest. Aztecs were a warrior tribe that conquered other small tribes and forced them to pay tribute. That is why those tribes such as the Tlaxcalteans, and Chollulans helped Hernan Cortés to defeat the Aztecs. The great capital city of the Aztecas was Tenochtitlan, today, downtown México City.
