India the subcontinent itself also never had any sort of great civilization. The Greeks romanticized India in legends of Dionysius and Semiramis conquering there but when Alexander showed up it was noted that the indigenous Indians were all NAKED and lived in mud huts as well as defecated openly (which as we know they still do). They then realized those legends were either false or about some other place. 

And the so-called “Indian” great civilizations existed mostly in what today is Afghanistan. Bactria, Parthia, the Medes, the Persians, the IVC. None of this was in India proper, it was on the fringe of India around the Indus River. Phoenicians and other sea merchants traded along its coast mostly as well. But the interior was full of primitive brown naked subhuman garbage. Just the same as it is today. Dravidians btw, carry the same Y-DNA mutation that abos do and look like hybrid abos. 

The Aryans fyi, came from what is today Iran and Afghanistan, subjugating the aforementioned shit skins and implementing a caste system. They didn’t fill the interior of that shitty little subcontinent of course. But their bastard mutts spread corrupted versions of proto-IE theology that existed in the Avesta and Vedas. 

Lastly the Greco-Indians were Greek colonists who also subjugated the locals and introduced their myths like the works of Homer which along with elements of the older Gilgamesh influenced Ramayana. These Greeks also imposed Buddhism. Ashoka likely wasn’t even Indian imo, instead probably some one named Diodotus. So Indian history is an exaggerated fabrication. They were primitive then and are primitive now. All that great India stuff has absolutely nothing to do with them.