History
1075
General
Population: 290 Million*
- Astronomy: Halley's Comet
- Mathematics: Omar Kayyam uses geometry to solve cubic equations
- Religion: Dictus papae on papal world dominance - Pope forbids lay investiture - challenging authority of HRE
Pope Gregory VII forbids Henry IV from electing bishops in the Holy Roman Empire - conflict
- Deaths: ? Waltheof of England - beheaded for treason
Asia
- India: Allegorical plays in India
Europe
- England: Richmond castle in Yorkshire built
Revolt of Danes and Anglo Saxons and some Normans plot to overthrow William – including Waltheof (Betrayer) – beheaded for treason, last great Anglo-Saxon warrior
- Holy Roman Empire: Conflict in Holy Roman Emipre between Pope Gregory VIII and King Henry IV
Henry IV HRE defeats Saxons
- Spanish States: St. James Cathedral at Santiago de Compostela
Middle East
- Syria and Palestine subdued by Seljuk leader Malik Shah