Marathon was the site of the most important...in the histroy of Western civilization.There,in 490B.C.,a Greek army defeated a(n)...army of Persians and saved Greece from becoming part of the Persian Empire.Marathon is a coastal plain about 25 miles northeast of Athens,Greece. Beginning 400 B.C.,Greek living under Persian...in Asia, Minor(now Turkey),...against King Darius I of Persia. The Athenians sent solders and 20 to aid the rebels. Then the Greek forces attacked and burned Sardis. a city that sereved as Darius's capital in Asia Minor.