The Arab expansion under Caliph Umar AD 650. Note the that area south of the Caspian was not yet conquered. The Dailamites held out aginst Islam and the Arabs for another century at least.
The Arab expansion under Caliph Umar AD 650. Note the that area south of the Caspian was not yet conquered. The Dailamites held out aginst Islam and the Arabs for another century at least.