Anti-Normanism
Anti-Normanism is an opposition to Normanism, the mainstream narrative of the Viking Age in Eastern Europe, and concerns the origin theory of Kievan Rus' that emerged in the 18th and 19th centuries. At the centre of the disagreement is the origin of the Varangian Rus', a people who travelled across and settled in Eastern Europe in the 8th and 9th centuries, and are considered by most modern historians to be of Scandinavian origin, but soon assimilated with the Slavs. Since the Normanist theory has been firmly established as mainstream, modern Anti-Normanism is viewed historical revisionism.
The origin of Kievan Rus' is infamously contentious, and relates to its perceived importance for the legitimation of nation-building, imperialism, and independence movements within the Slavic-speaking world, and for legitimating different political relationships between eastern and western European countries. The Norsemen that ventured from what is now Sweden, into the waterways of Eastern Europe feature prominently in the history of the Baltic states, Scandinavia, Poland, and the Byzantine Empire. They are particularly important in the historiography and cultural history of Belarus, Russia and Ukraine, but have also featured in the history of Poland. Nevertheless, contention has centred around whether the development of Kievan Rus' was influenced by non-Slavic Varangians (this idea is characterised as the "Normanist theory"), or whether the people of Kievan Rus' emerged solely from autochthonous Slavic political development (known as the "anti-Normanist theory"). Added to this ideological force is a scarcity of contemporary evidence for the emergence of Kievan Rus', and the great ethnic diversity and complexity of the wide area where these Norsemen were active.