9 dez 1212 ano - Frederick II is crowned Holy Roman Emperor
In Mainz, Frederick II is crowned Holy Roman Emperor. His rule would be contested by Otto until the battle of Bouvines, but he would be elected by the HRE princes in 1215.
Adicionado na linha do tempo:
Hamburg ISOT Timeline
The city of Hamburg c.2017 is sent back to the 12th Century.