How did the introduction of metal coins change trade in ancient Greece?

The 1st Greek coins appeared in Aegina c. 600 BCE, which were silver coins that had a symbol of a turtle based on maritime trade. Larger states were able to impose their currency on other city-states and have it accepted as means of exchange.

PLEASE MARK BRAINLIEST, I WORKED REALLY HARD ON THIS ANSWER! HAVE A GOOD DAY/NIGHT <3

i think it is the third one.