13th century
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The 13th century was the century which lasted from January 1, 1201 through December 31, 1300 in accordance with the Julian calendar.
Eastern Hemisphere in 1200 AD
Mongol Emperor Genghis Khan whose conquests created the largest contiguous empire in history
A page of the Italian Fibonacci's Liber Abaci from the Biblioteca Nazionale di Firenze showing the Fibonacci sequence with the position in the sequence labeled in Roman numerals and the value in Arabic-Hindu numerals.
Portrait of the Chinese Zen Buddhist Wuzhun Shifan, painted in 1238, Song dynasty.
Seventh Crusade
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The Seventh Crusade was the first of the two Crusades led by Louis IX of France. Also known as the Crusade of Louis IX to the Holy Land, it aimed to reclaim the Holy Land by attacking Egypt, the main
Louis IX during the Seventh Crusade
Battle of La Forbie, from Chronica Majora by Matthew Paris
Innocent IV with Louis IX at Cluny
Ascelin of Lombardy with the Mongol general Baiju.