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Al-Ma'mun was a pioneer of cartography having commissioned a world map from a large group of astronomers and geographers. The map is presently in an encyclopedia in Topkapi Sarai, a Museum in Istanbul. The map shows large parts of the Eurasian and African continents with recognizable coastlines and major seas.
Al-Maʾmūn was the seventh ʿAbbāsid caliph (813–833), known for his attempts to end sectarian rivalry in Islām and to impose upon his subjects a rationalist Muslim creed. The son of the celebrated caliph Hārūn ar-Rashīd and an Iranian concubine, al-Maʾmūn was born in 786, six months before his.
- Dominique Sourdel
al-Maʾmūn, (born 786, Baghdad, Iraq—died August 833, Tarsus, Cilicia), Seventh caliph (r. 813–833) of the ʿAbbāsid dynasty. He was the son of the celebrated Hārūn al-Rashīd and after his father’s death (809) defeated his brother al-Amīn in a civil war (813) to assume the caliphate.
Abu al-'Abbas Abdallah al-Ma'mun ibn al-Rashid786-833 Persian Caliph Al-Ma'mun was the seventh Abbasid caliph and a great patron of the sciences in the Islamic world. He established an influential scientific academy in Baghdad where Arab scholars made important contributions to mathematics, astronomy, and others fields.
8 de fev. de 2021 · Apontado por autoridades norte-americanas e brasileiras como o maior contrabandista de pessoas do mundo, o bengalês Saifullah Al Mamun, 34 anos, aceitou dar uma entrevista exclusiva à CNN. Em outubro de 2019, ele foi preso com mais 10 pessoas, no bairro do Brás, centro de São Paulo, em uma operação da Polícia Federal.
Abu Jafar al-Ma'mun ibn Harun (also spelled Almamon and el-Mâmoûn) (September 14, 786 - August 9, 833) (المأمون) was the seventh Abbasid caliph who reigned from 813 until his death in 833. He had been designated by his father, Harun al-Rashid to succeed his brother al-Amin although this did not happen without bloodshed.
During the reign of his father, Harun al-Rashid (r. 786–809), al-Ma˒mun served as the governor of Khurasan, in northeastern Iran. He was appointed by al-Rashid as his second successor, after al-Ma˒mun's half-brother, Muhammad al-Amin (r. 809–813). But the relations between the two brothers deteriorated rapidly after the death of al-Rashid ...
