Civilisation as we know it did not first appear in Mesopotamia, but some thousands of years before, in the Balkan.
If you don’t know who Harald Haarmann is, give it a search. Same for the “Danube script”, Tartaria tablets, Marco Merlini and the rest.
This is an excerpt from, as far as I understood, an upcoming documentary on the subject.
Something for the german speaking audience:
Marco Merlini’s study on the topic:
And some other stuff: