How did the Persians and later the Greeks help develop trade between Europe and Asia?

Silk Road routes also led to ports on the Persian Gulf, where goods were then transported up the Tigris and Euphrates rivers. Routes from these cities also connected to ports along the Mediterranean Sea, from which goods were shipped to cities throughout the Roman Empire and into Europe.

the answer would be a)henry grady because he came up with the term "new south"

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.