what events led to the fall of the abbasid empire
Abbasid Caliphate Abbasids found themselves at odds with the Shia Muslims, most of whom had supported their war against the Umayyads, since the Abbasids and the Shias claimed legitimacy by their familial connection to Prophet Muhammad. Once in power, the Abbasids embraced Sunni Islam and disavowed any support for Shi'a beliefs. Shortly thereafter, Berber Kharijites set up an independent state in North Africa in 801. Within 50 years the Idrisids in the Maghreb and Aghlabids of Ifriqiya and a little later the Tulunids and Ikshidids of Misr were effectively independent in Africa. The Abbasid authority began to deteriorate during the reign of al-Radi when their Turkic Army generals, who already had de facto independence, stopped paying the Caliphate. Even provinces close to Baghdad began to seek local dynastic rule. Also, the Abbasids found themselves to often be at conflict with the Umayyads in Spain. The Abbasid financial position weakened as well, with tax revenues from the Sawād decreasing in the 9th and 10th centuries.[98]
History of Saudi Arabia For much of the region's history a patchwork of tribal rulers controlled most of the area. The Al Saud (the Saudi royal family) emerged as minor tribal rulers in Najd in central Arabia. From the mid-18th century, imbued with the religious zeal of the Wahhabi Islamic movement, they became aggressively expansionist. Over the following 150 years, the extent of the Al Saud territory fluctuated. However, between 1902 and 1927, the Al Saud leader, Abdulaziz, carried out a series of wars of conquest which resulted in his establishing the Kingdom of Saudi Arabia in 1930.