This map shows the extent of the territory conquered by Alexander the Great.
Based on the map, which part of Alexander's empire was never part of the
Persian Empire?

The correct answer is The Greek city-states

During antiquity, Greece was divided into city-states. Each of them, due to their cultural diversity, had autonomy and their own way of governing. While Sparta prepared his youth for war, sending them as a child into exile, instructing them in military tactics and physical training; Athens encouraged the intellect and gained great prominence in the theater with the development of the tragedy and comedy genres (representations of real life as a form of entertainment and information). Athens also stood out in architecture, with innovative constructions such as the Parthenon, a temple in honor of the goddess Athena; and in Philosophy, with the thinkers Socrates, Plato and Aristotle.