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  First Caliph after Muhammad. He was the father of Muhammad's favorite wife. Ruled with wisdom and leniency
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  Stabbed to death in a mosque by a Persian prisoner of war. Ghazu raids occured during this time
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  Following the Muslim capture of Damascus, Byzantine Emperor Heraclius organizes a large army which takes back control. Byantine commander is defeated by Muslim forces
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  Islam begins to spread throughout North Africa.
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  Ali was the fourth Caliph
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  Muslims enter Spain in the west and India in the east. Eventually almost the entire Iberian Peninsula is under Islamic control.
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  Muslim empire reaches its furthes extent. Battle of Tours prevents further advance northwards.
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  Muslim advances were stopped by the Franks
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  Abu l'Abbas becomes caliph in Iraq
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  750 takes control of Damascus.
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  Baghdad becomes the new capital of the Abbasid empire
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  Burned and looted Baghdad
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  Muslims enter the area north of Arabia, known as "Sham," including Syria, Palestine, Lebanon and Iraq.
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  Caliph loses power
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  Muslim forces cross the Pyrenees, enter Gascony, and reach as far as Tulouse
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  Best known through the stories of The Thousand and One Nights.