Brief History of Abbasid Dynasty

Abbasids, dynasty of caliphs who ruled the caliphate of Islam from 750 until 1258. All of these caliphs were descended from Abbas, a member of the tribe of Quraysh of Mecca who was an uncle of the prophet Muhammad. The Abbasids seized the caliphate following the overthrow of the Umayyad dynasty of caliphs, and held it until the Mongols sacked Baghdād and killed the last caliph of the line. For most of this time their court was in Baghdād, a town founded at the command of the second Abbasid caliph, al-Mansur (754-775) in 762.

For the first century or so of their caliphate, the Abbasids acted as the leaders of Islam both religiously and politically, despite the fact that during this period their authority was rejected by some. The peak of their power probably occurred in the reign of Harun ar-Rashid, who relied heavily on the Barmakid family of administrators. Following Harun’s death there was a period of civil war between his two sons,

al-Amin and al-Mamun. Al-Mamun finally triumphed but the prestige of the family was damaged.
By the end of the 9th century the Abbasids were unable to exercise real religious or political authority. Their religious authority had been taken over by the religious scholars of Sunni Islam following the failure of the caliphs’ attempt to impose their will over them in the trial of strength known as the Mihna (833-847). As a result of this episode the caliphs were restricted to a largely symbolic role as merely nominal leaders of Sunni Islam. Followers of Shia Islam rejected the Abbasids completely.
Politically the caliphs had become puppets in the hands of their Turkish soldiers, who were able to remove and install caliphs as they wished. In 908 one caliph held office for one day only. The process culminated with the institution in 935 of the title Amir al-Umara (Commander of the Commanders), which was taken by the real political power, the chief of the Turkish soldiers.

At the same time, territories that the Abbasids controlled fell apart as independent states arose in regions previously under Abbasid rule. Some of the rulers of these states recognized the suzerainty of the Abbasids, but this was merely a token. In 945 the Shia Buwayhid family conquered Baghdād itself, and for the next century the Abbasid caliphate survived mainly because the Buwayhids found it useful in various ways.

Although the 9th and 10th centuries saw a decline in the power of the caliphs, the period was one of great religious and cultural importance. The trial of strength between the caliphs and the Sunni religious scholars sealed the rise of the Sunni form of Islam. It prepared the way for the appearance of the great books of Sunni law and the collections of hadiths (reports about Muhammad). Only slightly later, the Shia form of Islam achieved its definitive form when the line of the 12 Imams came to an end in 873, an event followed by the appearance of books of Shia law and distinctive collections of hadiths.
Philosophy, medicine, mathematics, and other sciences flourished as the Islamic world appropriated and developed the knowledge and wisdom of earlier and surrounding cultures. Particularly important was the science and philosophy of the Hellenistic Near East, and the 9th and 10th centuries saw the translation into Arabic of several works by (or attributed to) figures like Aristotle, Plato, Euclid, Galen, and others. The work of translation was encouraged by the Abbasid al-Mamun who founded the so-called House of Wisdom (Dar al-Hikma) in Baghdād as a center for it. Arabic-speaking Christians were especially active in the production of translations. The system of so-called Arabic numerals originated in India, but was adopted at this time by Islamic civilization, then later transmitted to the West.

The political fragmentation of the caliphate led to the emergence of many local courts and centers of power, which also encouraged the development of science and philosophy as well as poetry and prose, art, and architecture. Some of the local courts that emerged in the eastern regions of the caliphate are especially associated with the rise of an Islamic Persian literature and Iranian national sentiment.
In 1055 the Seljuk Turks, who were Sunnis, captured Baghdād, but this made no significant difference to the position of the caliphs. Although once again honored as symbols of the unity of Sunni Islam, their freedom of action was severely limited. Only in times of Seljuk weakness were individual caliphs occasionally able to exercise some power and influence. By the time the Mongol Empire ended the line of caliphs in 1258, Sunni Islam no longer needed even the symbolic role of the caliphate. It is true that the Mamluk sultans of Egypt established a puppet caliphate in Cairo, installing various members of the Abbasid family who had escaped the fall of Baghdād. Since the end of the Abbasid caliphate in Baghdād, however, no claimant to the office has achieved anything like general recognition among the Muslims.
After their first century or so the Abbasids cannot be said to have had much control over events. They nevertheless provided a focus of loyalty for Sunni Islam during an often turbulent period, and their caliphate may be seen in retrospect as the golden age of Islamic civilization.

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