Final answer:
Greek city-colonies in Asia Minor united to defeat the Persian invaders at the turn of the 5th century B.C.
Step-by-step explanation:
At the turn of the 5th century B.C., Greek city-colonies in Asia Minor united to defeat the Persian invaders. The Persian Empire launched multiple invasions into Greece during this time, which were met with resistance by the Greek city-states. The most famous unified Greek force against the Persians was the Greek city-states led by Athens and Sparta.
Learn more about Greek city-colonies in Asia Minor