What civilizations existed in medieval Europe?

We are talking about the period from the 5th to the 15th century, the following civilizations can be distinguished:
* Muslim. In the 8th century, the Arab Caliphate began expansion into the western Mediterranean, they captured almost the entire Iberian Peninsula (except for the Pyrenees and northern regions of Spain) and the Sicilian Emirate in the 9th century. The Arabs reached particular prosperity on the Iberian Peninsula, their cultural centers were Cordoba and Granada.
* Christian. It united many kingdoms that were created by barbarians (Franks, Burgundians, Vikings, Lombards, Angles and Saxons). In 1054, it was divided into Western and Eastern Christianity, by the 15th century, that is, by the end of the Middle Ages, Russia belonged to the second.
* Byzantine. It can be distinguished at the stage of the early Middle Ages, in the VI-VIII centuries it was the only empire in Europe and very developed.