The Tulunids were the first independent dynasty in Islamic Egypt (868–905 AD), when they broke away from the central authority of the Abbasid dynasty that ruled the Islamic Caliphate during that time. In the 9th century, internal conflict amongst the Abbasids meant that control of the outlying areas of the empire was increasingly tenuous, and in 868 the Turkic officer Ahmad ibn Tulun established himself as an independent governor of Egypt. He subsequently achieved nominal autonomy from the central Abbasids. During his reign (868–884) and those of his successors, the Tulunid domains were expanded to include Jordan Rift Valley, as well as Hijaz, Cyprus and Crete. Ahmad was succeeded by his son Khumarawayh, whose military and diplomatic achievements made him a major player in the Middle Eastern political stage. The Abbasids affirmed their recognition of the Tulunids as legitimate rulers, and the dynasty's status as vassals to the caliphate. After Khumarawayh's death, his successor emirs were ineffectual rulers, allowing their Turkic and black slave-soldiers to run the affairs of the state. In 905, the Tulunids were unable to resist an invasion by the Abbasid troops, who restored direct caliphal rule in Syria and Egypt.