The three things Germanic kingdoms had in common were witan, Roman influence and comitatus justice system.
Witan was a council that consisted of Anglo-Saxon kings. They decided matters such as land, problems with the church, taxes, law, succession and, defense.
Roman influence was strong in Germany and in the Germanic kingdoms, Roman’s oldest city in Germany was built in 16 B.C and it was named Augusta Treverorum. Germanic kingdoms were so deeply influenced by Romans that military kingship was based on a mix of birth status and popular consent.
At last, the comitatus justice system was a symbiotic system of protection and gain. It consisted of the protection the Lord offered the vassals in return of loyalty in battles.
