The history of Islam is believed by most historians to have originated with Muhammad's mission in Mecca and Medina at the start of the 7th century CE, although Muslims regard this time as a return to the original faith passed down by the Abrahamic prophets, such as Adam, Noah, Abraham, Moses, David, Solomon, and Jesus, with the submission to the will of God.
The Abbasid Caliphate or Abbasid Empire was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abd al-Muttalib, from whom the dynasty takes its name. They ruled as caliphs for most of the caliphate from their capital in Baghdad in modern-day Iraq, after having overthrown the Umayyad Caliphate in the Abbasid Revolution of 750 CE (132 AH). The Abbasid Revolution had its origins and first successes in the easterly region of Khorasan, far from the Levantine center of Umayyad influence.
Abū Jaʿfar Hārūn ibn Muḥammad ar-Rāshīd, or simply Hārūn ibn al-Mahdī, famously known as Hārūn ar-Rāshīd, was the fifth Abbasid caliph of the Abbasid Caliphate, reigning from September 786 until his death in March 809. His reign is traditionally regarded to be the beginning of the Islamic Golden Age. His epithet al-Rashid translates to "the Orthodox", "the Just", "the Upright", or "the Rightly-Guided".
Abū Jaʿfar ʿAbd Allāh ibn Muḥammad al-Manṣūr usually known simply as by his laqab al-Manṣūr (المنصور) was the second Abbasid caliph, reigning from 136 AH to 158 AH succeeding his brother al-Saffah. He is known for founding the 'Round City' of Madinat al-Salam, which was to become the core of imperial Baghdad.
Abu al-ʿAbbās Abd Allāh ibn Muḥammad ibn ʿAlī ibn ʿAbd Allāh ibn ʿal-ʿAbbās, known by his laqab al-Saffah, was the first caliph of the Abbasid Caliphate, one of the longest and most important caliphates in Islamic history.
Abū al-ʿAbbās Abd Allāh ibn Hārūn al-Maʾmūn, better known by his regnal name al-Ma'mun, was the seventh Abbasid caliph, who reigned from 813 until his death in 833. He succeeded his half-brother al-Amin after a civil war, during which the cohesion of the Abbasid Caliphate was weakened by rebellions and the rise of local strongmen; much of his domestic reign was consumed in pacification campaigns. Well educated and with a considerable interest in scholarship, al-Ma'mun promoted the Translation Movement, the flowering of learning and the sciences in Baghdad, and the publishing of al-Khwarizmi's book now known as "Algebra". He is also known for supporting the doctrine of Mu'tazilism and for imprisoning Imam Ahmad ibn Hanbal, the rise of religious persecution (mihna), and for the resumption of large-scale warfare with the Byzantine Empire.
The House of Wisdom, also known as the Grand Library of Baghdad, was believed to be a major Abbasid-era public academy and intellectual center in Baghdad. In popular reference, it acted as one of the world's largest public libraries during the Islamic Golden Age, and was founded either as a library for the collections of the fifth Abbasid caliph Harun al-Rashid in the late 8th century or as a private collection of the second Abbasid caliph al-Mansur to house rare books and collections in the Arabic language. During the reign of the seventh Abbasid caliph al-Ma'mun, it was turned into a public academy and a library.
A caliphate is an institution or public office under the leadership of an Islamic steward with the title of caliph, a person considered a political–religious successor to the Islamic prophet Muhammad and a leader of the entire Muslim world (ummah). Historically, the caliphates were polities based on Islam which developed into multi-ethnic trans-national empires.
Abu Abdallah Muhammad ibn Ahmad al-Mustazhir, better known by his regnal name al-Muqtafi li-Amr Allah, was the Abbasid caliph in Baghdad from 1136 to 1160, succeeding his nephew al-Rashid, who had been forced to abdicate by the Seljuks. The continued disunion and contests between Seljuk Turks afforded al-Muqtafi opportunity of not only maintaining his authority in Baghdad, but also extending it throughout Iraq.
The Barmakids, also spelled Barmecides, were an influential Iranian family from Balkh, where they were originally hereditary Buddhist leaders, and subsequently came to great political power under the Abbasid caliphs of Baghdad. Khalid, the son of Barmak became the chief minister (vizier) of Al Saffah, the first Caliph of the Abbasid dynasty. His son Yahya aided Harun al-Rashid in capturing the throne and rose to power as the most powerful man in the Caliphate.
The siege of Baghdad in 1157 was the last Seljuq attempt to capture Baghdad from the Abbasids. Caliph al-Muqtafi successfully defended his capital against the coalition armies of Seljuq Sultan Muhammad of Hamadan and Qutb ad-Din of Mosul.
The Graeco-Arabic translation movement was a large, well-funded, and sustained effort responsible for translating a significant volume of secular Greek texts into Arabic. The translation movement took place in Baghdad from the mid-eighth century to the late tenth century.
Christian influences in Islam can be traced back to Eastern Christianity, which surrounded the origins of Islam. Islam, emerging in the context of the Middle East that was largely Christian, was first seen as a Christological heresy known as the "heresy of the Ishmaelites", described as such in Concerning Heresy by Saint John of Damascus, a Syriac scholar.
The Islamic Golden Age was a period of scientific, economic and cultural flourishing in the history of Islam, traditionally dated from the 8th century to the 13th century.
Al-Mustansir Bi'llah, was the Caliph of the Abbasid dynasty from 1226 to 1242. He succeeded Caliph Az-Zahir in the year 1226 and was the penultimate caliph to rule from Baghdad.
The Abbasid dynasty or Abbasids were an Arab dynasty that ruled the Abbasid 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.
Yaḥyā ibn ʿAbd Allāh ibn al-Ḥasan ibn al-Ḥasan ibn ʿAlī ibn Abī Ṭālib was an Alid and Zaydi leader who led a rebellion against the Abbasid caliph Harun al-Rashid in Daylam in 792. He was soon obliged to capitulate, but his activity began the spread of Zaydi Islam in the remote mountains of Daylam. After his surrender, he was initially treated with much honour, but Harun remained deeply suspicious of his popularity and intentions, and recalled him to Baghdad, where he spent the remainder of his life in prison. In 802, the Barmakid Ja'far ibn Yahya helped him escape, but he was captured; the event led to the execution of the Barmakids, once Harun's closest companions. Yahya died in prison, probably in 803.
Muḥammad ibn Muḥammad ibn Hārūn was an Abbasid prince, the son of Caliph al-Mu'tasim. He was a contemporary of the caliph al-Wathiq and al-Mutawakkil. His son Ahmad became the twelfth Abbasid caliph as al-Musta'in. Muhammad was the first prince in Abbasid history whose son became a caliph, no other Abbasid prince before him had this prestige.
Great Qadi is a religious and secular position established during Abbasid Caliphate, specifically under the caliphate of Harun al-Rashid. The position emerged from the necessity to establish a clear separation between the Judiciary and executive authorities, particularly following the flourishing of the Islamic state, the diversification of its institutions, and the expansion of its territories. This expansion rendered it imperative that each individual in the state have an administrative position that was distinct from those held by others, to ensure the effective fulfillment of their duties.
