Seljuk Empire

In 1153, the Oghuz Turks rebelled and captured Sanjar. He managed to escape after three years but died a year later. The Atabegs, such as the Zengids and Artuqids, were only nominally under the Seljuk Sultan, and generally controlled Syria independently. When Sanjar died in 1157, the empire fractured even further and rendered the Atabegs effectively independent. The breakaway states and dynasties included: After the Second Crusade, Nur ad-Din's general Shirkuh, who had established himself in Egypt on Fatimid land, was succeeded by Saladin. In time, Saladin rebelled against Nur ad-Din Zangi; upon his death, Saladin married his widow, captured most of Syria and created the Ayyubid dynasty.[citation needed] On other fronts, the Kingdom of Georgia began to become a regional power and extended its borders at the expense of the Great Seljuk Empire. The same was true during the revival of the Armenian Kingdom of Cilicia, under Leo II of Armenia, in Anatolia. The Abbasid caliph al-Nasir also began to reassert the authority of the caliph and allied himself with the Khwarezmshah Takash.[citation needed]

Seljuk power was indeed at its zenith under Malikshāh I, and both the Qarakhanids and Ghaznavids had to acknowledge the overlordship of the Seljuks. Seljuk dominion was established over the ancient Sasanian domains, in Iran and Iraq, and included Anatolia, Syria, as well as parts of Central Asia and modern Afghanistan. Their rule was modelled after the tribal organization common among Turkic and Mongol nomadic cultures, resembling a "family federation" or "appanage state". Under this organization, the leading member of the paramount family assigned to family members portions of his domains as autonomous appanages.

The Seljuks exercised full control over Islamic Central Asia and the Middle East between 1040 and 1157. For most of its history, the empire was split into a western and eastern half and did not have a single capital or political center. In the east, the chief seat of Seljuk rule was Marv in present-day Turkmenistan. In the west, various cities, where the Seljuk rulers lived periodically, served as capitals: Rayy, Isfahan, Baghdad, and, later, Hamadan. These western lands were known as the Sultanate of Iraq.[note 1] After 1118, the Seljuk rulers of Iraq recognized the suzerainty of the Seljuk sultan Ahmad Sanjar, who mostly ruled from Marv, and was known by the title of al-sultān al-a'zam, 'the Greatest Sultan'. The Seljuk rulers of Iraq were often mentioned as the "Lesser Seljuks".

Much of the ideological character of the Seljuk Empire was derived from the earlier Samanid and Ghaznavid kingdoms, which had in turn emerged from the Perso-Islamic imperial system of the Abbasid caliphate. This Perso-Islamic tradition was based on pre-Islamic Iranian ideas of kingship molded into an Islamic framework. Little of the public symbolism used by the Seljuks was Turkic, namely the tughra. The populace of the Seljuk Empire would have considered this Perso-Islamic tradition more significant than that of steppe customs. Highly Persianized in culture and language, the Seljuks also played an important role in the development of the Turko-Persian tradition, even exporting Persian culture to Anatolia.[b] Under the Seljuks, Persian was also used for books lecturing about politics in the mirrors for princes genre, such as the prominent Siyasatnama (Book of Politics) composed by Nizam al-Mulk. During this period, these types of books consciously made use of Islamic and Iranian traditions, such as an ideal government based on the Islamic prophet Muhammad and his successors, or the Sasanian King of Kings Khosrow I (r. 531–579).

In 985, the Seljuks migrated to the city of Jend, where they converted to Islam. The arrival of the Seljuk Turks into Persia, and their patronage of constructing madrasas, allowed for Sunni Islam to become the dominant sect of Islam. Until the death of Sultan Sanjar, the Seljuks were pious Sunnis and represented a re-establishment of Sunni Islam in Iraq and western Persia since the 10th century. In 1046, Tughril built the madrasa al-Sultaniya in Nishapur, while Chaghri Beg founded a madrasa in Merv. Tughril and Alp Arslan chose Hanafi qadis and preachers for these madrasas. By 1063, there were twenty-five madrasas scattered throughout Persia and Khorasan, founded by Seljuk princes. In the 12th century there were over thirty madrasas in Baghdad. In 1056, Tughril built a Friday mosque with a newly constructed quarter in Baghdad which was surrounded by a wall. The new quarter separated the Shia community from the Sunnis, since there had been frequent outbreaks of violence. Through the influence of Tughril's vizier, al-Kunduri, a Hanafi Sunni, the Ash'ari and Ismaili Shi'ites were exiled from Khurasan and cursed at Friday sermons in Seljuk mosques. Al-Kunduri's vizierate persecuted Ash'aris and Sharifis, although this ended with the vizierate of Nizam al-Mulk. It was under the vizierate of al-Kunduri that the Islamic scholar, Al-Juwayni was forced to flee to Mecca and Medina. In 1065, Alp Arslan campaigned against the Kingdom of Georgia, subjugated Tbilisi, and built a mosque in the city.

Mosques and madrasas were created and embellished during the period of Seljuk control. Congregational mosques were either repaired, rebuilt, or constructed in their entirety. The Seljuk sultan also commissioned numerous madrasas to promote the teaching of orthodox Islamic sciences. These developments in architectural practice are coherent with the Seljuk dynasty's focus on Islam and the promotion of Muslim orthodoxy, the combining of Sufism and Sunnism. Overall, the architecture attributed to the Seljuk period is characterized by elaborate decoration, much like the other arts produced under Seljuk rule. Decoration was primarily executed in elaborate brickwork and in the use of colorful glazed tiles. The most important innovations of this period occurred in the form of mosques, as first seen in the renovations of the Friday mosque of Isfahan. One was the introduction of the four-iwan plan. This was attested in some earlier buildings, but under the Seljuks it turned into a common characteristic of mosques, madrasas, and caravanserais in Iran and Central Asia, eventually influencing architecture in Syria, Mesopotamia, and Anatolia as well. Another major innovation was the creation of monumental domes over the space in front of the mihrab (or the maqsura), which also became characteristic of later mosques in this region and beyond.

Various art forms were popularized during the Seljuk period, as evidenced by the vast amount of surviving artifacts. Most Seljuk arts are known to have been produced in what is modern-day Iran. However, the Seljuk sultans also encouraged artists to settle in Anatolia as part of a recolonization and reconstruction process in several cities. Many works of Seljuk art continued to be produced following the decline of the empire in the late 12th century. In this regard, the timeline associated with the production of Seljuk art does not entirely match the political events pertaining to the empire and its eventual fall. Nonetheless, relatively little art can be correctly dated and ascribed to a Great Seljuk context. Much of the material deemed to be Seljuk in world museums in fact belongs to the period A.D. 1150–1250, after the fall of the Great Seljuk Empire, when there seems to have been a sudden burst in artistic production, apparently to a great extent unrelated to court patronage.

The dynasty brought revival, energy, and reunion to the Islamic civilization hitherto dominated by Arabs and Persians. The Seljuks founded universities and were also patrons of art and literature. Their reign is characterized by Persian astronomers such as Omar Khayyam, and the Persian philosopher al-Ghazali. Under the Seljuks, New Persian became the language for historical recording, while the center of Arabic language culture shifted from Baghdad to Cairo.