History
1230
General
Population: 410 Million*
- Disease: Leprosy imported to Europe by Crusaders
- Deaths: German minnesinger Walther von der Vogelweide, Ottokar I King of Bohemia
Africa
- Tunisia: Hafsid monarchy takes over from Almohads in Tunisia and acquires Saharan trade
Asia
- Mongolia: Genghis Kahn's son retires
Europe
General: Leprosy imported to Europe by Crusaders
Bulgarian-Greek Wars kill 2000
- German States: Death of Ottokar I King of Bohemia as Wenceslas I becomes king
Founding of Berlin on site of former Slav settlements
Lübeck and Hamburg form alliance, beginning of the Hanseatic league
- Holy Roman Empire: Peace of San Germano between emperor and pope – Frederick II being absolved from excommunication
- Italian States: Deluge of Tiber produces famine in Rome
- Spanish States: Union of the kingdoms of Castile and León
Middle East
- Turkey: Start of Wars of the Seljuk Turks to 1243