A profoundly important, but little recognized, fact of early civilization is the close affinity between the religious and philosophical traditions of Greece and India as a result of their derivation from a common PIE source. These cultures shared many of the same gods, as well as common terms for weapons such as bow and arrow, and both even used the same term for a specific ritual known as the hecatomb, which involved the sacrifice of a hundred cows.
Greece and india. Same source from PIE
