What does the Battle of Marathon the Battle of Salamis and the Battle of Thermopylae have in common?

The battle was between Greek and Persian forces .

Marathon is an ancient Greek city-state, a contemporary town in Greece, the site of the battle of Marathon in 490 BC, in which the heavily outnumbered Athenian army defeated the Persians.

They all started at sea.

The narrow pass removed the advantage of Persian numerical superiority .

The Battle of Marathon was the first attempt , and first defeat , by Persian forces to subjugate Greece . The Persians were defeated by the Athenians at Marathon , Greece .