What is the primary geographical divergence between the donkey's lineage and the onager's lineage?

Answer

African/Middle Eastern ancestry versus Asian ancestry

The common donkey (*Equus asinus*) descended from the African wild ass roaming Africa and the Middle East, while the onager belongs to the Asiatic wild asses originating in Asia.

What is the primary geographical divergence between the donkey's lineage and the onager's lineage?
DonkeyOnager