What term defines a city-state in ancient Greece?

The term that defines a city-state in ancient Greece is "Polis." A Polis was more than just a physical city; it encompassed the surrounding territory and was characterized by a sense of community among its inhabitants. Each polis had its own government, laws, and customs, and they played a significant role in the political, social, and cultural life of ancient Greece.

The concept of Polismunity was foundational to Greek identity, as it fostered civic engagement and local governance. Unlike the other terms provided, Polis specifically refers to the autonomous city-state structure that was prevalent in ancient Greece, illustrating the unique balance of urban and rural influences in Greek civilization.

In contrast, "Metropolis" generally refers to a large, significant city that serves as a central hub, often expanding beyond the original idea of a city-state. "Politeia" translates to the political organization or constitution of a city-state, focusing on governance rather than the city-state itself. "Citadel" refers to a fortified area typically found within a city, serving as a place of refuge or security, but does not encapsulate the broader concept of a city-state.