An aristocracy, middle class, and slaves are examples of what kind of structure?

Social structure

Explanation:

An aristocracy, middle class, and slaves are examples of a social structure. A social structure is a pattern of organization that helps people in a society interact with one another. Social structures determine how we interact with others, live together, work, marry, build friendships, etc. In this case, these three levels represent different social groups that are present in many social structures.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration