Abbasid dynasty

The Abbasid dynasty, or Abbasids, (Arabic: بنو العباس, romanized: Banu al-ʿAbbās) was an Arab dynasty that ruled the third Islamic caliphate between 750 and 1258. They were from the Qurayshi Hashimid clan of Banu Abbas, descended from Abbas ibn Abd al-Muttalib. The Abbasid Caliphate is divided into three main periods: Early Abbasid era (750–861), Middle Abbasid era (861–936) and Later Abbasid era (936–1258). A cadet branch of the dynasty also ruled as ceremonial rulers for the Mamluk Sultanate (1261–1517) until their conquest by the Ottoman Empire.

The Abbasids descended from Muhammad's uncle Abbas ibn Abd al-Muttalib (566–653 CE), an early Qur'an scholar from whom the dynasty takes its name. Their roots trace back to Hashim ibn 'Abd Manaf and Adnan.

The Abbasid dynasty ruled the third caliphate to succeed the Islamic prophet Muhammad. The Abbasids ruled for most of the caliphate from their capital in Baghdad, Iraq after having overthrown the Umayyad Caliphate in the Abbasid Revolution of 750 CE (132 AH). The Abbasid Caliphate first centered its government in Kufa, Iraq, but in 762 the caliph Al-Mansur founded the city of Baghdad near the ancient city of Babylon over the ruins of the ancient Sassanid capital of Ctesiphon. Baghdad became the center of science, culture and innovation, housing several key academic institutions like the House of Wisdom, in what became known as the Golden Age of Islam. This, as well as a multiethnic and multireligious environment, garnered it a worldwide reputation as the "Center of Learning."

The Abbasid leadership had to work hard in the last half of the 8th century (750–800) under several competent caliphs and their viziers to usher in the administrative changes needed to keep order of the political challenges created by the far-flung nature of the empire and limited communication across it. It was during this early period, in particular during the governance of Al-Mansur, Harun al-Rashid, and al-Ma'mun, that its reputation and power were created. Al-Mu'tasim moved the capital away from Baghdad to the new city of Samarra. The Abbasid Caliphate was at its peak until the assassination of Caliph Al-Mutawakkil in 861.

Al-Mutawakkil had appointed his oldest son, al-Muntasir, as his heir in 849/50, but slowly had shifted his favour to his second son, al-Mu'tazz, encouraged by al-Fath ibn Khaqan and the vizier Ubayd Allah ibn Yahya ibn Khaqan. This rivalry extended into the political sphere, as al-Mu'tazz's succession appears to have been backed by the traditional Abbasid elites as well, while al-Muntasir was backed by the Turkic and Maghariba guard troops. In late autumn 861, matters came to a head: in October, al-Mutawakkil ordered the estates of the Turkic general Wasif to be confiscated and handed over to al-Fath. Feeling backed into a corner, the Turkic leadership began a plot to assassinate the Caliph. They were soon joined, or at least had the tacit approval, of al-Muntasir, who smarted from a succession of humiliations: on 5 December, on the recommendation of al-Fath and Ubayd Allah, he was bypassed in favour of al-Mu'tazz for leading the Friday prayer at the end of Ramadan, while three days later, when al-Mutawakkil was feeling ill and chose al-Muntasir to represent him on the prayer, once again Ubayd Allah intervened and persuaded the Caliph to go in person. Even worse, according to al-Tabari, on the next day al-Mutawakkil alternately vilified and threatened to kill his eldest son, and even had al-Fath slap him on the face. With rumours circulating that Wasif and the other Turkish leaders would be rounded up and executed on 12 December, the conspirators decided to act.

According to al-Tabari, a story later circulated that al-Fath and Ubayd Allah were forewarned of the plot by a Turkic woman, but had disregarded it, confident that no-one would dare carry it out. On the night of 10/11 December, about one hour after midnight, the Turks burst into the chamber where the Caliph and al-Fath were having supper. Al-Fath was killed trying to protect the Caliph, who was killed next. Al-Muntasir, who now assumed the Caliphate, initially claimed that al-Fath had murdered his father, and that he had been killed after; within a short time, however, the official story changed to al-Mutawakkil choking on his drink. The murder of al-Mutawakkil began the tumultuous period known as "Anarchy at Samarra", which lasted until 870 and brought the Abbasid Caliphate to the brink of collapse.

The decline of the Abbasids started with the death of al-Mutawakkil. After his assassination, the Anarchy at Samarra began. This was a period of extreme internal instability marked by the violent succession of four caliphs from 861 to 870.

Al-Muntasir became Caliph on 11 December 861, after his father al-Mutawakkil was assassinated by members of his Turkic guard. Although he was suspected of being involved in the plot to kill al-Mutawakkil, he was able to quickly take control of affairs in Samarra and receive the oath of allegiance from the leading men of the state. Al-Muntasir's sudden elevation to the Caliphate served to benefit several of his close associates, who gained senior positions in the government after his ascension. Included among these were his secretary, Ahmad ibn al-Khasib, who became vizier, and Wasif, a senior Turkic general who had likely been heavily involved in al-Mutawakkil's murder. His reign lasted less than half a year; it ended with his death from unknown causes on Sunday, 7 June 862, at the age of 24 years. During al-Muntasir's short reign (r. 861–862), the Turks pressured him into removing al-Mu'tazz and al-Mu'ayyad from the succession. When al-Muntasir died, the Turkic officers gathered together and decided to install the dead caliph's cousin al-Musta'in (son of al-Mutawakkil's brother Muhammad) on the throne. The new caliph was almost immediately faced with a large riot in Samarra in support of the disenfranchised al-Mu'tazz; the rioters were put down by the military but casualties on both sides were heavy. Al-Musta'in, worried that al-Mu'tazz or al-Mu'ayyad could press their claims to the caliphate, first attempted to buy them off and then threw them in prison. In 866 his nephew al-Musta'in was killed by al-Mu'tazz after Fifth Fitna. Al-Mu'tazz's reign marks the apogee of the decline of the Caliphate's central authority, and the climax of centrifugal tendencies, expressed through the emergence of the autonomous dynasties in Abbasid Caliphate. Finally, unable to meet the financial demands of the Turkic troops, in mid-July a palace coup deposed al-Mu'tazz. He was imprisoned and maltreated to such an extent that he died after three days, on 16 July 869. He was succeeded by his cousin al-Muhtadi. He ruled until 870, until he was murdered on 21 June 870, and replaced by his cousin, al-Mu'tamid (r. 870–892).