<Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (February 2011) (Learn how and when to remove this template message) </Td> </Tr> <P> 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 . </P> <P> The Abbasid Caliphate differed from others in that it did not have the same borders and extent as Islam . Particularly, in the west of the Caliphate, there were multiple smaller caliphates that existed in relative peace with them . This list represents the succession of Islamic dynasties that emerged from the fractured Abbasid empire by their general geographic location . Dynasties often overlap, where a vassal emir revolted from and later conquered his lord . Gaps appear during periods of contest where the dominating power was unclear . Except for the Fatimid Caliphate in Egypt, recognizing a Shi'ite succession through Ali, and the Andalusian Caliphates of the Umayyads and Almohads, every Muslim dynasty at least acknowledged the nominal suzerainty of the Abbasids as Caliph and Commander of the Faithful . </P>

What events led to the fall of the abbasid empire
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