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

 The correct answer is : Both the Incas and the Aztecs organized themselves socially in the form of a pyramid.

Explanation:  The pyramid of the Incas was: on the top was the Inca, then the nobility that were the relatives of the emperor, then the curaca who was the main local authority, then the wilaq or priest, then the aqllasqa that were women who served the Inca or to the sun god, then the priests, then the Hatun rune that was the people in general, then the Yanacona who were the slaves of the Incas, then the mamacona that was the high priestess, then the mitimaes that were sent to colonize new territories and finally the pineapples that were prisoners of war.

The Aztec pyramid was formed by the emperor, then the nobles and the priests, then the merchants and merchants, then the farmers and craftsmen and finally the slaves.

agree with wilson that weakening the treaty would threaten world peace.