Editing Viking Age (section)

===Ideological model===
This era coincided with the [[Medieval Warm Period]] (800–1300) and stopped with the start of the [[Little Ice Age]] (about 1250–1850). The start of the Viking Age, with the sack of Lindisfarne, also coincided with [[Charlemagne]]'s [[Saxon Wars]], or Christian wars with pagans in [[Old Saxony|Saxony]]. Bruno Dumézil theorises that the Viking attacks may have been in response to the spread of Christianity among pagan peoples.<ref name="Bruno Dumézil 2005">Bruno Dumézil, master of Conference at Paris X–Nanterre, Normalien, aggregated history, author of conversion and freedom in the barbarian kingdoms. 5th&nbsp;– 8th centuries (Fayard, 2005)</ref><ref name="annals R.20">"Franques Royal Annals" cited in Sawyer, Peter (2001) ''The Oxford Illustrated History of the Vikings''. {{ISBN|0-19-285434-8}}. p. 20</ref><ref name="Decaux 1981 pp. 184">Decaux, Alain and Castelot, André (1981) ''Dictionnaire d'histoire de France''. Perrin. {{ISBN|2-7242-3080-9}}. pp. 184–185</ref><ref name="Boyer, R. 2008 p. 96">Boyer, R. (2008) ''Les Vikings: histoire, mythes, dictionnaire''. R. Laffont. {{ISBN|978-2-221-10631-0}}. p. 96</ref><ref>[[François-Xavier Dillmann]], "Viking civilisation and culture. A bibliography of French-language", Caen, Centre for research on the countries of the North and Northwest, University of Caen, 1975, p. 19, and" Les Vikings&nbsp;– the Scandinavian and European 800–1200 ", 22nd exhibition of art from the Council of Europe, 1992, p. 26</ref> Because of the penetration of [[Christianization of Scandinavia|Christianity in Scandinavia]], serious conflict divided Norway for almost a century.