The correct answer to this open question is the following.
Three influential Germanic kingdoms were Franks, Anglo-Saxons, and Ostrogoths.
These Germanic kingdoms ruled over territories that were part of the Roman Empire. The territory of Italy was ruled by the Ostrogoths, the territory of Gallia was ruled by the Franks, the Anglo-Saxons ruled Britannia, and Spania was ruled by the Visigoths.
