History
1090
General
Population: 296 Million*
- Technology: Mechanical water clock invented in Kaifeng China
- Warfare: Hasan ibn al-Sabbah first "Old Man of the Mountain" founds Assassin sect in Persia
- Deaths: Chinese painter Kuo His
Asia
- China: Mechanical water clock invented in Kaifeng
Europe
- General: William II of England Invades Normandy to subdue brother
- Sweden: Ingo I becomes king of Sweden
Middle East
- Persia: Hasan ibn al-Sabbah first "Old Man of the Mountain" founds Assassin sect in Persia
- Syria: Crusaders take Kurdish garrison and renamed it Krak des Chevaliers (Crag of the Knights) in Syrian desert [timeline]