How did the battle of Thermopylae affect Greece? A. The Persians invaded deeper into Greece.
B. Greece gained territory from the Persians.
C. Greece set up an alliance with the Persians.
D. The Persians gained total control of Greece.

Your answer would be B.

Explanation:

While the Battle of Thermopylae was technically a defeat for the Greek coalition, it was also a conquest. It marked the beginning of several important Greek victories against the Persians and represented a morale shift among the Greeks.

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