Government: what was the structure of ancient greece and ancient rome. what were the main principles of ancient greece and ancient rome civilization's government?

For the Greeks (or more particularly the Athenians) any system which excluded power from the whole citizen-body and was not a tyranny or monarchy was described as anoligarchy. Oligarchies were perhaps the most common form of city-state government and they often occurred when democracy went wrong.

It is state and federali really hope this