<Dd> laid low the army of the gilded Medes . </Dd> <P> In the meanwhile, Darius began raising a huge new army with which he meant to completely subjugate Greece; however, in 486 BC, his Egyptian subjects revolted, indefinitely postponing any Greek expedition . Darius then died whilst preparing to march on Egypt, and the throne of Persia passed to his son Xerxes I. Xerxes crushed the Egyptian revolt, and very quickly restarted the preparations for the invasion of Greece . The epic second Persian invasion of Greece finally began in 480 BC, and the Persians met with initial success at the battles of Thermopylae and Artemisium . However, defeat at the Battle of Salamis would be the turning point in the campaign, and the next year the expedition was ended by the decisive Greek victory at the Battle of Plataea . </P> <P> The defeat at Marathon barely touched the vast resources of the Persian empire, yet for the Greeks it was an enormously significant victory . It was the first time the Greeks had beaten the Persians, proving that the Persians were not invincible, and that resistance, rather than subjugation, was possible . </P> <P> The battle was a defining moment for the young Athenian democracy, showing what might be achieved through unity and self - belief; indeed, the battle effectively marks the start of a "golden age" for Athens . This was also applicable to Greece as a whole; "their victory endowed the Greeks with a faith in their destiny that was to endure for three centuries, during which western culture was born". John Stuart Mill's famous opinion was that "the Battle of Marathon, even as an event in British history, is more important than the Battle of Hastings". It seems that the Athenian playwright Aeschylus considered his participation at Marathon to be his greatest achievement in life (rather than his plays) since on his gravestone there was the following epigram: </P>

What is the significance of the battle of the marathon
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