This is an interesting article about Naukrtis, a Greek trading post in the Nile Delta in Archaic times (7th and 6th c. BCE).
"... the Greeks who lived there, though from different tribes, lived and worshipped together, pointing to the emergence of a national Greek identity. The city also acted as a symbiotic nexus for the interchange of Greek and Egyptian art and culture."
"Naukratis, in his opinion, should be considered a unique and particularly important instance of "contact zones" in antiquity, in which Greek trade, although controlled by the Egyptians and mediated to a certain extant by the Lydians, both contributed to and profited from the imperial ambitions of others."
http://www.infozine.com/news/stories/op/storiesView/sid/45213/