1200 (The People's Chronology)
The Peace of Le Goulet ends hostilities between England and France.
Anglesey is seized by the prince of North Wales, Llewelyn, who 6 years ago returned from exile and drove his uncle David I from his territory.
Eleanor of Aquitaine, now 78, leads an army that crushes a rebellion in Anjou against her second son, England's King John.
Prince George Bobolyubski tries once again to wrest the throne of Georgia from his ex-wife, Tamara. This time he has support from the Seljuk Turks, but again he is repulsed.
A Christian monk in the Mar Saba monastery at Constantinople runs out of paper for a prayer book he is copying, finds a parchment book containing the mathematical writings and diagrams left by Archimedes at his death in 212 B.C. (see 1000), scrapes or washes off the original text, and writes over it, creating what scholars will call a palimpsest (year approximate; see 1906).
Philosopher Zhu Xi (Chu Hsi) dies April 23 at age 69, having created a synthesis of neo-Confucian thinking that will dominate China's intellectual life for centuries. He has been barred from political life in his later years through the efforts of his enemies but his reputation will soon be rehabilitated.
Poetry: Der Arme Heinrich by German poet Hartmann von Aue is an epic poem.