The Battle of Marathon occurred in 490 BC.
The Battle of Marathon was a battle fought between the Athenian army and the Persian Empire in 490 BC. The Athenian army, led by the general Miltiades, was victorious, and the Persian forces were forced to retreat. This battle is seen as a pivotal moment in Greek history, as it secured the independence of the Greek city-states from Persian rule. It is also seen as a major victory for democracy, as the Athenian army was made up of citizens who had volunteered to fight for their city-state. The battle is commemorated in the modern-day Marathon race, which is run annually in Athens.