Why is themistocles important to greek history?
he freed all the greek slaves.
he led the greeks to victory at the battle of hemius.
he led the greek army against xerxes.
he encouraged greece to create a strong navy.

The correct answer is D) the encouraged Greece to create a strong Navy

Explanation:

He constantly made a strong argument for the fortification of the Athenian Navy during his lifetime, and in 483 BC he managed to convince the Athenians to build a fleet of 200 triremes; these proved indispensable in the conflict with Persia.

He is considered a hero of the Athenian (and indeed Greek) cause, one who was most instrumental to the victory of Greece over the Persian Threat.

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explanation: