 In 920, Al Mahdi took up residence at the newly established capital of the empire, Al-Mahdiyyah.After his death, Al Mahdi was succeeded by his son, Abu Al-Qasim Muhammad Al-Qaim, who continued his expansionist policy.At the time of his death he had extended his reign to Morocco of the Idrisids, as well as Egypt itself.The Fatimid Caliphate grew to include Sicily and to stretch across North Africa from the Atlantic Ocean to Libya.