From the “Cleavage” of Central Asia to Greater Khurasan: History and Historiography of Late Antique East Iran

The history of Central Asia is normally considered peripheral to those of the civilizations that surrounded it—Marshal Hodgson termed it a civilizational “cleavage.” However, in the early Islamic period this region, particularly its southern and western parts, emerges as the dominant entity of Greater Khurasan to play a central role in the affairs of the Islamic Caliphate. This paper considers the history of the region, dubbed East Iran, before this rise to importance and proposes a different historiographical approach focusing on the developments in East Iran during the period of late antiquity and in interaction with the Sasanian Empire. It is proposed that the Greater Khurasan emerged as the result of the merging of the socio-cultural worlds of East Iran and that of the Sasanian Empire.