アンジュー帝国
Before the 13th century, only a small part of what is now France was under control of the Frankish king; in the north there were Viking incursions leading to the formation of the Duchy of Normandy; in the west, the counts of Anjou established themselves as powerful rivals of the king, by the late 11th century ruling over the "Angevin Empire", which included the kingdom of England.