As I understand... 1) It so happens that the middle-east ( present day.. Turkey, Syria, Iraq, Lebanon, Jordan, Israel, Palestine, Egypt, and Iran , and Indus valley (present day, Pakisthan) have been acknowledged as the earliest major civilizations. namely Egyptian, Mesopotamian and Indus valley civilizations. The dates would be around 3500 BC. For want of a better name, we can call them Dravidian civilization. .Idol worship, sacrifice to propitiate the many gods and goddesses, and temple culture and priestly class , can be said to be distinct features. Sun and Moon worship also was prevalent. as belief in astrology and objects of worship in Iraq. ( Mesopotamia).. Kosambi states that the earliest was in Palestine area. (7000 BC). . We have seen pictures of Durga with Lion. Such an imagery exists in Sumeria also. A.C.DAS suggests that Central Iraq ( Chaldea) is the Chozha kingdom , Northern Iraq and Syria ( Assyria).
was Chera kingdom. ( Nebuchadnezer . ) and the Southern Iraq ( Sumerian) was Pandyan kingdom. To complete the picture, there was a famous Elamite civilization also with capital at Susa. ( soosai?). . Nilakanta Sastry finds Trimalai somewhere near northern Turkey, the only place which comes closest to Tamil. We all know, that the Swat valley has a population speaking 'dravidian' language. It is in north Pakisthan-Afganisthan area. ( of Malala fame).
https://archive.org/details/AHistoryOfSouthIndiaPDF
That the Aryans came from some place in North-Central Asia , is the opinion of great many famous historians and Linguists. . Edward Jones among them, the founder of Royal Asiatic Society. and that Sanskrit, Greek and Latin had a common language root also has been accepted. It is fallacious to limit the migration, conflicts, intermingling and assimilation of the ideas and practices of these three famous 'Southern Civilizations' by the immigrants from Central Asia. it extended from Caspian sea down wards into the Middle-East...
Let us not confuse Aryans with Brahmins. It is quite possible that the brahmins were the original priestly class of IVC, and all kshathriyas and Vis ( free peasants) were the incoming Aryan groups through the North western passes. Even in Buddhist times, Cholas were known as Horse people. and 'munkudumi's ( no insult meant). North Indian historians ( pre-1947) have clearly cited reference to Sibi. and even given the routes of migration of the tamil kings from North india to Far south.
"James Fergusson connects the Oddiyana country with the Kamboja of the Hindu texts.[20] Indeed, the territories ofKunar, Oddiyana, Swat and Varanaos had been the notable habitats of the Asvaka Kambojas since remote antiquity. The Asvakas were cattle breeders and horse folk and had earned the epithet of Asvakas due to their intimate connections with the Asvas ("horses"). The Sivis, as described by Alexander's historians, "were a shaved-headed people, worshipers of god Shiva, wore clothes made from animal skins, and were warlike people who fought with the clubs...most of these are also the salient characteristics of the ancient Kambojas".
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The southerly movement of the Sivis is also evidenced from their other settlement called Usinara near Yamuna, ruled by Sivi king called Usinara.[31] Sivis also are attested to have one settlement in Sind, another one in Madhyamika (Tambavati Nagri) near Chittore (in Rajputana) and
yet another one on the Dasa Kumara-chrita on the banks of the Kaveri in southern India (Karnataka/Tamil Nadu).[32
http://rsramaswamy.blogspot.in/2013/04/ ... mboja.html
For vaishnavaites, the interesting connection is from the banks of Yamuna, Mathsya and Surasena janapadjams , through Rajasthan and Gujarath and Dwaraka, to Madhurai in Pandyan kingdom.