History
1254
General
Population: 417 Million*
- Religion: Death of Pope Innocent IV – Pope Alexander IV Rinaldo de Conti di Segni) elected
End 7th crusade
- Travel: Marco Polo born in Venice
- Deaths: Pope Innocent IV, HRE Conrad IV
Europe
- Bulgaria: Byzantine-Bulgarian Wars kill 3000
- France: Louis IX returns to France from Palestine
Court chaplain Robert de Sorbon founds the Paris School of Theology (later the Sorbonne)
- Holy Roman Empire: Death of Emperor Conrad IV - Great Interregnum in Germany (struggle for crown) to 1273 - End of Hohenstaufens rule
Middle East
- General: Byzantine-Bulgarian Wars kill 3000