What military techniques helped the Greeks defeat the Persians?

The Greeks defeated the Persians because they had a good army of their own, not a hired one. They built ships, they had a good strategy for how to win. The skill and cunning of the Greeks also played an important role. All the cities of Greece joined forces, and it was easier for them to defeat the enemy. Well, the main thing is that they had a good commander, Themistocles, who led them to victory over the Persians.

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