الإمبراطورية الكارولنجية
The Vikings primarily targeted Ireland until 830, as England and the Carolingian Empire was able to fight the Vikings off. However, after 830, the Vikings had considerable success against England, Carolingian Empire and other parts of Western Europe. After 830, the Vikings exploited disunity within the Carolingian Empire, as well as pitted the English kingdoms against each other.