There was no Greek empire - the Greek world was a lot of city-states which sometimes formed self-defence leagues. The Macedonian empire under Alexander the great included Egypt and the lower Nile River.
Marseille is a town in southern France. It was founded as a Greek colony before the Roman empire.
The Persian Empire on one side, and the southern Greek city-states on the other.
A Persian Empire fleet comprised mainly of Phoenician, Asian-Greek and Egyptian contingents, and a coalitian fleet from the southern Greek cities.
There never was a "Greek empire".
A coalition of southern Greek city-states defeated a Persian fleet of Phoenician, Greek and Egyptian ships at the naval battle of Salamis.
The war was between Athens and its empire and the southern Doric Greek states, most of which were located in the Peloponnesian Peninsula.
Persia wanted to include mainland Greece in its empire. The southern city-states disagreed and resisted the takeover.
The Persians were tired of the mainland Greek city-states supporting revolts by the Greek cities in Asia Minor (part of the Persian empire) and decided to incorporate mainland Greece within their empire to ensure ongoing peace. Some of the mainland Greek city-states submitted to Persia, the southern ones resisted.
There never was a Greek empire.
The Greek city-states in western Europe, the Roman and Italian peoples, and the North African peoples and Carthaginians.
Persian War: The Greek cities of Asia Minor provided a third of the Persian navy for the 480 invasion of southern Greece. The Greek city states of central Greece provided a substantial part of the Persian army which fought the southern Greek armies. Peloponnesian War: Athens and the cities in its empire fought the mainly Peloponnesian cities led by Sparta.
No, they were a Dorian Hellenic Greek people. However the Azande people of the southern Sudan had a culture similar to the Spartans.