The Islamic Heartlands in the Late
Abbasid Era
Signs of decline were present during the
reign of Caliph al-Mahdi (775-785).
He failed to reconcile moderate Shi'i to
Abbasid rule.
Al-Mahdi abandoned the frugal ways of
his predecessor and surrounded his
court with luxury.
He failed to establish a succession
system resolving disputes among his
many sons, leaving a lasting problem to
future rulers.