Why was the battle of Thermopylae considered to be a turning point of the Persian War? In your two sentence opinion response, include at least one example from the chapter to support your answer.

The Battle of Thermopylae took place at Thermopylae. Greeks were able to hold off Persian invaders for 3 days until a Greek traitor showed the Persians a way over the mountains. ... Xerxes' defeat was a turning point in history because it ensured that Greek culture could continue to thrive in the west.

Because he proposed that all the treaties should be made through the league of nations.