It's said that in ancient Bactria, northern half Afghanistan, southern half Tajikistan, is where Zoroastrianism was found, thus Tajik's ancestors before Islam were Zoroastrianist. After Cyrus the Great of Persia conquered and annexed Bactria into the Achaemenian Empire, the Zoroastrian religion spread westward as far as Babylon and Israel.
But what about Pashtuns, what religion did ancient Pashtuns practize prior to Islamic expansion?
But what about Pashtuns, what religion did ancient Pashtuns practize prior to Islamic expansion?

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