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850s
The 850s decade ran from January 1, 850, to December 31, 859. Significant people * Al-Mutawakkil * Charles the Bald * Louis the German * Lothar * Ethelwulf of Wessex * Bardas * Kenneth I of Scotland * Halfdan the Black Halfdan the Black (Old Norse: ''Halfdanr Svarti''; ) was a king of Vestfold. He belonged to the House of Yngling and was the father of Harald Fairhair, the first king of a unified Norway. In sagas According to ''Heimskringla'' and ''Fagrskinna ... * Abu Ja'far Muhammad ibn Musa al-Khwarizmi References Sources * * * * * * * * * * {{refend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Mutawakkil
Ja'far ibn al-Mu'tasim, Muḥammad ibn Harun al-Rashid, Hārūn al-Mutawakkil ʿalā Allāh (); March 82211 December 861, commonly known by his laqab, regnal name al-Mutawwakil ala Allah (), was the tenth Abbasid Caliphate, Abbasid caliph, ruling from 847 until his assassination in 861. He succeeded his brother, al-Wathiq (), and is known for expanding the empire to its maximum extent. He was deeply religious, and is remembered for discarding the Muʿtazila, ending the Mihna (a period of persecution of Islamic scholars), and releasing Ahmad ibn Hanbal. He is also known for his tough rule, especially with respect to non-Muslim subjects. He was assassinated on 11 December 861 by the Turkic guard with the support of his son, al-Muntasir, marking the beginning of the period of civil strife known as the "Anarchy at Samarra". Early life Al-Mutawakkil was born on 31 March 822 to the Abbasid prince Abu Ishaq Muhammad (the future al-Mu'tasim) and a slave concubine from Khwarazm named S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles The Bald
Charles the Bald (; 13 June 823 – 6 October 877), also known as CharlesII, was a 9th-century king of West Francia (843–877), King of Italy (875–877) and emperor of the Carolingian Empire (875–877). After a series of civil wars during the reign of his father, Louis the Pious, Charles succeeded, by the Treaty of Verdun (843), in acquiring the western third of the empire. He was a grandson of Charlemagne and the youngest son of Louis the Pious by his second wife, Judith of Bavaria (died 843), Judith. Struggle against his brothers He was born on 13 June 823 in Frankfurt, when his elder brothers were already adults and had been assigned their own ''regna'', or subkingdoms, by their father. The attempts made by Louis the Pious to assign Charles a subkingdom, first Alemannia and then the country between the Meuse and the Pyrenees (in 832, after the rising of Pepin I of Aquitaine, PepinI of Aquitaine) were unsuccessful. The numerous reconciliations with the rebellious Lothair ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis The German
Louis the German (German language, German: ''Ludwig der Deutsche''; c. 806/810 – 28 August 876), also known as Louis II of Germany (German language, German: ''Ludwig II. von Deutschland''), was the first king of East Francia, and ruled from 843 to 876 AD. Grandson of emperor Charlemagne and the third son of Louis the Pious, emperor of Francia, and his first wife, Ermengarde of Hesbaye, he received the appellation ''Germanicus'' shortly after his death, when East Francia became known as the kingdom of Germany. After protracted clashes with his father and his brothers, Louis received the East Frankish kingdom in the Treaty of Verdun (843). His attempts to conquer his half-brother Charles the Bald's West Frankish kingdom in 858–59 were unsuccessful. The 860s were marked by a severe crisis, with the East Frankish rebellions of the sons, as well as struggles to maintain supremacy over his realm. In the Treaty of Meerssen he acquired Lotharingia for the East Frankish kingdom in 87 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lothair I
Lothair I (9th. C. Frankish: ''Ludher'' and Medieval Latin: ''Lodharius''; Dutch and Medieval Latin: ''Lotharius''; German: ''Lothar''; French: ''Lothaire''; Italian: ''Lotario''; 795 – 29 September 855) was a 9th-century emperor of the Carolingian empire (817–855, with his father until 840) and king of Italy (818–855) and Middle Francia (843–855). Lothair I was the eldest son of the Carolingian emperor Louis I and his wife Ermengarde of Hesbaye, daughter of Ingerman the duke of Hesbaye. On several occasions, Lothair led his full-brothers Pepin I of Aquitaine and Louis the German in revolt against their father to protest against attempts to make their half-brother Charles the Bald a co-heir to the Frankish domains. Upon the father's death, Charles and Louis joined forces against Lothair in a three-year dynastic war (840–843). The struggles between the brothers led directly to the breakup of the Frankish Empire assembled by their grandfather Charlemagne, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bardas
Bardas (; died 21 April 866) was a Byzantine noble and high-ranking minister. As the brother of Empress Theodora, he rose to high office under Theophilos (. Although sidelined after Theophilos's death by Theodora and Theoktistos, in 855 he engineered Theoktistos's murder and became the ''de facto'' regent for his nephew, Michael III (). Rising to the rank of '' Caesar'', he was the effective ruler of the Byzantine Empire for ten years, a period which saw military success, renewed diplomatic and missionary activity, and an intellectual revival that heralded the Macedonian Renaissance. He was assassinated in 866 at the instigation of Michael III's new favourite, Basil the Macedonian, who a year later would usurp the throne for himself and install his own dynasty on the Byzantine throne. Biography Early life Bardas was born to the '' droungarios'' Marinos and Theoktiste, and was the elder brother of Empress Theodora, the wife of Emperor Theophilos, and of Petronas.. Three o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kenneth I Of Scotland
Kenneth MacAlpin (; ; 810 – 13 February 858) or Kenneth I was King of Dál Riada (841–850), and King of the Picts (848–858), of likely Gaelic origin. According to the traditional account, he inherited the throne of Dál Riada from his father Alpín mac Echdach, founder of the Alpínid dynasty. Kenneth I conquered the kingdom of the Picts in 843–850 and began a campaign to seize all of Scotland and assimilate the Picts, for which he was posthumously nicknamed '' An Ferbasach'' ("The Conqueror"). He fought the Britons of the Kingdom of Strathclyde and the invading Vikings from Scandinavia. Forteviot became the capital of his kingdom and Kenneth relocated relics, including the Stone of Scone from an abandoned abbey on Iona, to his new domain. Kenneth I is traditionally considered the founder of Scotland, which was then known as Alba in Gaelic, although like his immediate successors, he bore the title of King of the Picts. It was Donald II that first bore the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halfdan The Black
Halfdan the Black (Old Norse: ''Halfdanr Svarti''; ) was a king of Vestfold. He belonged to the House of Yngling and was the father of Harald Fairhair, the first king of a unified Norway. In sagas According to ''Heimskringla'' and ''Fagrskinna'', Halfdan was the son of the Yngling King Gudrød the Hunter. ''Heimskringla'' also names his mother, as Åsa, daughter of King Harald of Agder, and his half-brother as Olaf Geirstad-Alf. Heimskringla relates that when Halfdan's father was killed, Åsa took the 1 year-old Halfdan and returned to Agder, where Halfdan was raised. When he was 18 or 19 years old, Halfdan became king of Agder. He quickly began adding to his kingdom, through political negotiation and military conquest. He divided the kingdom of Vestfold with his brother Olaf and, through military action, persuaded King Gandalf of Vingulmark to cede half his kingdom. Based on the formulaic nature of his ties to his predecessors, his strong affiliation with Agder, and the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muhammad Ibn Musa Al-Khwarizmi
Muhammad ibn Musa al-Khwarizmi , or simply al-Khwarizmi, was a mathematician active during the Islamic Golden Age, who produced Arabic-language works in mathematics, astronomy, and geography. Around 820, he worked at the House of Wisdom in Baghdad, the contemporary capital city of the Abbasid Caliphate. One of the most prominent scholars of the period, his works were widely influential on later authors, both in the Islamic world and Europe. His popularizing treatise on algebra, compiled between 813 and 833 as ''Al-Jabr'' (''The Compendious Book on Calculation by Completion and Balancing''),Oaks, J. (2009), "Polynomials and Equations in Arabic Algebra", ''Archive for History of Exact Sciences'', 63(2), 169–203. presented the first systematic solution of linear and quadratic equations. One of his achievements in algebra was his demonstration of how to solve quadratic equations by completing the square, for which he provided geometric justifications. Because al-Khwarizmi was t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
