Well ancient Greece was an oligarchy (kind of like a democracy). Greece has City States, as well as Ancient Mesopotamia. Mesopotamia had kings though, but was ran like an Oligarchy.
Yes, I believe that's true.
Because there are only two senators who must represent a whole state.
The answer is imperialism. Imperialism is <span>a policy of extending a country's power and influence through diplomacy or military force.</span>