History
1123
General
Population: 323 Million*
- Religion: First Lateran Council under Pope Calixtus II suppresses simony and marriage of priests
- Deaths: Persian poet and scientist Omar Khayyam
Asia
- Japan: Ex-emperor Shirikawa imposes Buddhist prohibition against killing
- Mongolia: Completion of Mongol capture of Mongolia and inner China
Europe
- General: Famine and plague in France and Germany
- England: Founding of St. Bartholomew's hospital in London
Middle East
- Byzantine Empire: Byzantine emperor John II defeats Serbs
- Persia: Death of Omar Khayyam the Persian poet and scientist