I retain this deep fascination with the Sumerian-Elamite-Harappans. I'm pretty convinced by what I have read that these three started off as the same people and that they are probably linked to the Kartveli speakers and maybe to the Basque speakers
They achieved such a high state of civilisation when the Semites, the Aryans were hunter-gatherers or herdsmen.
Not so sure they weren’t Aryans (a branch of Aryans themselves).
” However it is now recognized by scholars that the Aryan invasion theory of India is a myth that owes more to European politics than anything in Indian records or archaeology. (The politics of History, The Hindustan Times, Nov. 28 1993).
Kalibangan Fire AltarsThe evidence against any such invasion is now far too strong to be taken seriously. To begin with, sites spread over such a vast stretch, measuring well over a thousand miles across would not have been all abandoned simultaneously due to the incursion of nomadic bands at one extremity.
Further, there is profuse archaeological evidence including the presence of sacrificial altars that go to show that the Harappans were part of the Vedic aryan fold. As a result, it can safely by said that the Vedic age also ended with the Harappan civilization.”
http://archaeologyonline.net/artifacts/aryan-harappan-myth
Sumerian, Elamite, and Basque are considered language isolates; there’s no Roman-era sign of Basques or the Basque language, indicating that they weren’t around until late-Roman/early medieval times. Harappan, like proto-Elamite script, is undeciphered, but Harappan is generally regarded as agglutinative. It’s not Sumerian (which has no known living relatives).
Kartveli speakers (Georgian) have a known presence in the Caucasus beginning in the 5th c AD, probably came west along the steppe as did a great number of people, including (over a long period) the various drifts of Indo-European groups. Perhaps that’s what happened with the Basques as well — the Suevi/Vandals and Visigoths arrived in Iberia, coming from the east in stages, and overwhelming the depleted western Roman Empire. It’s not unlikely that other, unrelated or barely related and smaller groups rolled in at the same time.