What was the purpose for city-states in ancient greece?

A city-state, or polis, was the community structure of ancient Greece. Each city-state was organized with an urban center and the surrounding countryside. Characteristics of the city in a polis were outer walls for protection, as well as a public space that included temples and government buildings

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska