How did Mycenae become powerful in the Mediterranean area?

The Mycenaeans developed trade throughout the Mediterranean

Explanation:

The Mycenaeans developed on mainland Greece and ruled the region from around 1600 BC to 1100 BC. ... The Mycenaeans developed trade throughout the Mediterranean. They built large trade ships and traveled to places like Egypt where they traded goods like olive oil and wine for metals and ivory.

maybe by travelers or gossip

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.