Yes, it sided withe the southern Greek forces opposing the Persian invasion.
Corinth fought on the winning side in both wars.
there was the first Persian war then the second Persian war then the war that we are in today.
The Persian War.
Which particular war? The Persian what?
Persian War 499-449 BCE. Peloponnesian War 431-404 BCE.
An empire is an empire, a war is a war.
First define the Second Persian War. The Persian War ran 499-449 BCE - it had several phases - Ionian Revolt, Persian punitive expedition against Eretria and Athens, Persian invasion of mainland Greece, Greek counter-offensive. Which among this are supposed to be 'First Persian War', Second Persian War' and 'Third Persian War' ?
There were no countries in the sense we call countries now. Persian Empire, including large contingents from Phoenicia, the Asian-Greek cities and Egypt. versus About 200 independent Greek city-states, the largest contingents were from Sparta, Athens, Corinth, Sicyon, Orchomenus, Megara.
Persian War I, Persian War II, The Peloponnesean War, The Macedonian War, …
The Persian War was from 499 to 449 BCE.
Which Persian War? 1980, 1991, 2003, or...?
First identify what the First Persian War was.