The answer should be on answers.com
Answer: Battle of Thermopylae
Explanation: The Greeks held off the Persians killing thousands until the Persians found a way around the mountains and got behind the Greeks. King Leonidas told most of his troops to flee but stayed behind with a small force including his 300 Spartans in order to allow the rest of the Greek army to escape.
GIVE ME BRAILEST
Are there any options to choose from?
I think that the most likely answer is B.