1204

Events

February - Byzantine emperor Alexius IV is overthrown in a revolution, and Alexius V is proclaimed emperor.
April 12 - The Fourth Crusade take Constantinople by storm, and pillage the city for three days. End of the Fourth Crusade.
May 16 - Baldwin, Count of Flanders is crowned emperor of the Latin Empire a week after his election by the members of the Fourth Crusade.
Theodore I Lascaris flees to Nicaea after the capture of Constantinople, and establishes the Empire of Nicaea; Byzantine successor states are also established in Epirus and Trebizond.
Boniface of Montferrat, a leader of the Fourth Crusade, founds the Kingdom of Thessalonica.
The writings of French theologian Amalric of Bena are condemned by the University of Paris and Pope Innocent III.
Valdemar II, King of Denmark, is recognized as king in Norway.
Angers and Normandy are recaptured from England by Philip II of France.
The Cistercian convent of Port-Royal is established.
The district of Cham becomes subject to Bavaria.
Philip of Swabia becomes a subject of Hermann I of Thuringia.

Births

Deaths

Heads of states