Yes. The ancient civilizations are estimated of coming about around then (soon after the Flood, incidently). That was why China and Greece weren't posted, as they came about later. A civilization so old and that went to 1000AD is odd.
Or, that in all reality the Greeks, just like all the other Indo-European speaking peoples of their day, lived mostly in what is now Bulgaria!
That is to say, the Greeks and Bulgarians at that time were probably indistinguishible.
Which flood are you talking about?
Fascinating article. Thanks for posting that! :)