Colonies and culture of Magna Graecia! Recommend this obscure book to all, it's a real gem:
GODS WITH BRONZE SWORDS by Costa De Loverdo
Older book, cheap on Amazon, somewhat heavy on the speculation but always entertaining and thought-provoking. You start seeing the Greek influence in its earliest epoch, though the physical evidence was long ago broken down by the waves.
Another excellent work: MEDITERRANEAN, SAGA OF A SEA by Emil Ludwig. A Med-lover must-read!
Thanks 668!