Asuristan (Assyria) was a province of the Sassanid Empire (226–651). The territory was taken during the fall of the Parthian Empire. The Sassanians renamed Babylon, to Asuristan.[1][2] The region was previously known as Mesopotamia and is nowadays known as Iraq.[3] The province for the most part streched from Mosul to Adiabene. [4] While the official religion of the Sassanid empire was Zoroastrians during the third and fourth century, Jews and Christians outnumbered them in the Asuristan province. [5] Its inhabitants were mostly working as agricultural.[6]