acropolis
An acropolis. A polis is a Greek city state.
Greek forts were called acropoleis or akropoleis. These were fortified hilltop citadels that served as defensive strongholds and administrative centers in ancient Greek cities. They typically housed important buildings such as temples, palaces, and government offices.
Ancient Greek settlements were usually called city-states. A city-state was usually composed of villages that had grouped together for trade and protection.
Polis.
Greece was not a single country. The Greek world comprised about 2,000 independent city-states, spread around the Mediterranean and Black Seas.
Athens
Athens for example.
The most important structure in an ancient Greek city was the acropolis. Fortified by massive stone walls, the acropolis of a town may also be home to the most important temples for the town's favorite Olympian deity.(acropolis)
hoplites
Assuming you mean `Sparta´, the ancient Greek State, the slaves there were called Helots.
It was an important part of greek life because it had the art and practices of the government. Polis gave rise to the term politics and it was the framework of Greek Life. Each city-state had a different kind of government.
Usually he/she is called the treasurer. Secretary of State is in charge for the public records of the state