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The next step for the Greek's war campaign was to drive away Persians from the Aegean. The Delian League was formed in 477 B.C.E between the Greek states. The campaign, now led by the Athenians, drove the Persians away from the eastern Mediterranean in less than twenty years.

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Greek went offensive, and even after having their city sacked twice (Athens), the Athenian fleet earned a lot of respect.

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Having Persian threat removed for the time, did not mean that the Athens would back down.

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While some Greeks submitted to the Persian control, southern Greece formed an alliance, the Hellenic League.

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Southern Greece made an alliance called the Hellenic League. Near Thermopylae, 300 Spartans and their king lured the Persians into Salamis. The Persians lost their number advantage and maneuverability. The 300 lost their lives but ultimately killed more Persians than their original number.

In 20 years , certain leagues forced the Persians off their territory

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Sparta fought on land while Athens controlled the sea.

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Xeres sent messages to bid them to offer the Greeks "earth and water" as a sign of submission.

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Xeres, succeeded his father and sent a massive Persian army and a large fleet of ships in (450 B.C.E.

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The ctizens of Eretria betrayed Greece and the ones who did not were sent to exile by Persia.

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Athens managed to get away as they beat a light-armed Persian army at Marathon.

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490 B.C.E Darius sent a naval fleet to punish the mainland Greek cities.

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The Persian Wars included two attacks on Greece.

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The Ionian revolt occurred in response to the Persian officials with the aid of two Greek mainland cities, Athens and Eretria

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In conquering Lydia, some Greek cities were taken in to subjugation.

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Greeks used hoplites, armed men with spears and shields. These men were not properly trained but defeated the Persians in the battle of Marathon anyway.