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Select > Who • What • When • Where • Which |
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11th Century
: 15 of 15 |
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When > Periods •
Years
Years > 1st Millennium BC •
2nd Millennium BC •
3rd Millennium BC •
4th Millennium BC •
1st Millennium •
2nd Millennium •
3rd Millennium
2nd Millennium > 11th Century •
12th Century •
13th Century •
14th Century •
15th Century •
16th Century •
17th Century •
18th Century •
19th Century •
20th Century
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Ibn al-Haytham, Father of Optics
Ibn al-Haytham was an Arab or Persian Muslim polymath who made significant contributions to the principles of optics, as well as to anatomy, astronomy, engineering, mathe... |
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Leif Ericson, 1st to sail to North America
Leif Ericson was a Norse explorer known to be the first European to have landed in North America (presumably in Newfoundland, Canada). It is believed that Leif was born a... |
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Al-Biruni, Persian Mathematician
Abu Rayhan Biruni was a Persian mathematician, physicist, scholar, encyclopedist, philosopher, astronomer, astrologer, traveller, historian, pharmacist, and teacher, who... |
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Guido d'Arezzo, Iventor Musical Notation
Guido d'Arezzo, a monk of the Order of St. Benedict, b. near Paris c. 995; d. at Avellano, near Arezzo, 1050.
He invented the system of staff-notation still in use, a... |
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King Arthur, Man or Myth
For over a thousand years, storytellers have spun tales of King Arthur of Britain, his Queen Guinevere, and the circle of his noble Knights. The A... |
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Macbeth of Scotland
Mac Bethad mac Findlaích, known in English as Macbeth, was King of Scots (or Alba) from 1040 until his death. He is best known as the subject of William Shakespeare's tra... |
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William I, The Conqueror
William of Normandy ruled as the Duke of Normandy from 1035 to 1087 and as King of England from 1066 to 1087. William invaded England, won a victory at the Battle of Hast... |
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Pope Urban II, Crusade Instigator
Urban is best known for starting the First Crusade. Urban's crusading movement took its first public shape at the Council of Piacenza, where in March 1095 Urban received... |
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El Cid, Rodrigo Díaz de Vivar
Rodrigo (or Ruy) Díaz de Vivar, nicknamed El Cid Campeador, was a Castilian military and political leader in medieval Spain. Born of the minor nobility, El Cid was educat... |
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Algazel (Al-Ghazali), Persian Scholar
Al-Ghazali known as Algazel to the western medieval world, born and died in Tus, in the Khorasan province of Persia (modern day Iran). He was a Muslim theologian, jurist,... |
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Hugues de Payens, 1st Grand Master
Hugues de Payens, also de Payns, a French knight from the Champagne region, was the co-founder and first Grand Master of the Knights Templar. With Saint Bernard of Clairv... |
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St. Bernard of Clairvaux
Saint Bernard of Clairvaux was a French abbot and the primary builder of the reforming Cistercian monastic order. "The voice of conscience, the dominating figure in the C... |
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Roger II, King of Sicily
Roger II was King of Sicily, son of Roger I of Sicily and successor to his brother Simon. He began his rule as Count of Sicily in 1105, later became Duke of Apulia and Ca... |
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The Crusades
The First Crusade is the most documented of all the Crusades. Each Royal Court had its own historian, who told his Lord's story of conquest and adventure, emphasizing his... |
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Kingdom of Jerusalem
The Kingdom of Jerusalem was a Christian kingdom established in the Levant in 1099 after the First Crusade. It lasted less than two hundred years, until 1291 when the las... |
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