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470 - 544
  Dionysius, Introduction 'Anno Domini'  
Dionysius Exiguus has left his mark conspicuously, for it was he who introduced the use of the Christian Era according to which dates are reckoned from the Incarnation, which he assigned to 25 March, in the year 754 from the foundation of R...
 
 
476 - 550
  Aryabhata, Inventor of the Digit Zero  
Aryabhata is the first of the great astronomers of the classical age of India. He was born in 476 AD in Ashmaka but later lived in Kusumapura, which his commentator Bhaskara I (629 AD) identifies with Patilputra (modern Patna). Aryabhata...
 
 
570 - 632
  Muhammad, Founder of Islam  
Muhammad was the founder of Islam. According to Islamic doctrine, he was a prophet and God's messenger, sent to present and confirm the monotheistic teachings preached previously by Adam, Abraham, Moses, Jesus, and other prophets. He is vie...
 
 
675 - 754
  Saint Boniface, Murdered near Dokkum  
Born to a noble family of Wessex, England, as Wynfrid or Wynfrith, Boniface (in Latin, Bonifatius) is known as the "Apostle of Germany" for his work in Christianizing that country. First a benedictine monk and then ordained as a pr...
 
 
731 - 788
  Abd al-Rahman I, Founder Al-Andalus  
Abd al-Rahman I was the founder of a Muslim dynasty that ruled the greater part of Iberia for nearly three centuries (including the succeeding Caliphate of Córdoba). The Muslims called the regions of Iberia under their dominion al-Andalus....
 
 
742 - 814
  Charlemagne, Charles I the Great  
Charlemagne, meaning Charles the Great, was King of the Franks from 768 and Emperor of the Romans (Imperator Romanorum) from 800 to his death in 814. He expanded the Frankish kingdom into an empire that incorporated much of Western and Cent...
 
    Rajaraja I, Chola Emperor of India  
Rajaraja I was a Chola emperor from present day south India who ruled over the Chola kingdom of medieval Tamil Nadu (parts of southern India), parts of northern India, two thirds of Sri Lankan territory, Maldives and parts of East Asia, bet...
 
    Tancred of Hauteville, Norman Lord  
Tancred of Hauteville was an eleventh-century Norman petty lord about whom little is known. His historical importance comes entirely from the accomplishments of his sons and later descendants. He was a minor noble near Coutances in the Cote...
 
    Guido d'Arezzo, Iventor Musical Notation  
Guido of Arezzo (991/992 – after 1033) was a music theorist of the Medieval era. He is regarded as the inventor of modern musical notation (staff notation) that replaced neumatic notation; his text, the Micrologus, was the second-most-widel...
 
    William The Conqueror  
William I usually known as William the Conqueror and sometimes William the Bastard, was the first Norman King of England, reigning from 1066 until his death in 1087. The descendant of Viking raiders, he had been Duke of Normandy since 1035...
 
    Alp Arslan, 2nd Sultan Seljuq Empire  
Alp Arslan was the second Sultan of the Seljuq Empire and great-grandson of Seljuq, the eponymous founder of the dynasty. His real name was Muhammad bin Dawud Chaghri, and for his military prowess, personal valour, and fighting skills he ob...
 
    Genghis Khan, Unified the Mongols  
Genghis Khan was the founder and Great Khan (emperor) of the Mongol Empire, which became the largest contiguous empire in history after his demise. He came to power by uniting many of the nomadic tribes of northeast Asia. After founding...
 
    Fibonacci, Hindu-Arabic Numeral System  
Leonardo Pisano Bigollo or simply Fibonacci, was an Italian mathematician, considered by some "the most talented western mathematician of the Middle Ages." Fibonacci is best known to the modern world for the spreading of the Hindu-Arabic nu...
 
    Villard de Honnecourt, Sketchbook  
Villard de Honnecourt was a 13th-century artist from Picardy in northern France. He is known to history only through a surviving portfolio or "sketchbook" containing about 250 drawings and designs of a wide variety of subjects. The so-ca...
 
    Osman I, Founder Ottoman Empire - 1299  
Osman I was the leader of the Ottoman Turks and the founder of the dynasty that established and ruled the Ottoman Empire. The state, while only a small principality (beylik) during Osman's lifetime, was named after him and would prevail as...
 
       
 
         
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