Respuesta :

Battle of Thermopylae. 300 Spartans under king Leonidas and other Greek allies hold back the persians led by Xerxes l  for three days but are defeated. 

Answer:

Spartans (Greek Warriors) and Persians

Explanation:

The Battle of Thermopylae was fought between an alliance of Greek city-states, led by King Leonidas I of Sparta, and the Achaemenid Empire of Xerxes I. It was fought over the course of three days, during the second Persian invasion of Greece.