I slightly disagree. though Indian civilization is 15,000 to 20,000 year old but there were civilization older that it.
It all started 1,00,000 year ago when desert was created in Africa, One branch of ape started walking on two feet, Once the hand was free it was used for innovation...
In regular interval these ppl started migrated to Asia and Europe. It is assumned that first batch of ppl travel from Africa, Arabia, Gujrat (india) east cost India and Australia.
In travel some group settled and started civilization, while some kept travelling all over world..
View attachment 96010
If you see this Picture you can see ppl migrating frm Gujrat/Rajsthan to Iran, Kuwait, Europe , China...
Note:
I am not chest thumping here, Just because India was on the way of migration, migration happen like this.
Since Saraswati river basin was fertile and abundant in food and water, Human race stayed here for longer..
Dharmic kaho Munna Dharmic, not Paganism.
Buddha was born some 2500 year ago while IVC is 3 times older that Buddha birth.
Dharminc Kaho Munna, Dharmic. Hindusim is extension of Dharmic ppl ..
So we have all claim over IVC than some "Arabic Tribal religion convertee"