This map shows Macedonia and the Greek city-states. A map titled Macedonia. A key shows Macedonia and Greek city-states by color. The shaded areas are bordered by the Aegean Sea, Ionian Sea, and Mediterranean Sea. Why did Philip II need a navy to defeat the Greek city-states? The city-states were surrounded by water. Most city-states were located on islands. Most city-states were located across the Aegean Sea. The city-states had allies near the Mediterranean Sea. Mark this and return