Answer:
They targeted churches and monasteries during raids.
Step-by-step explanation:
Vikings is the main name given to the members of the Nordic peoples originating in Scandinavia, famous for their incursions and looting in Europe. Depending on the context and the interpretation of the author, the name can be used to refer to the raiders of this origin or to their countries of origin. Metonymy has led to the name is still used today in a colloquial way to refer to the Scandinavian countries. His language was the old Norse.
While there are vague references to Germanic peoples of the Baltic Sea and Scandinavia in Roman sources, their attacks and their appearance on the European political scene become relevant with the sacking of the monastery of Lindisfarne (793) in the north of Great Britain, to which they soon followed attacks to other monasteries. The annals and chronicles of the next two centuries are replete with frightening stories. Their violent actions terrified the old communities, which, though accustomed to war, had no way of foreseeing when there would be a raid and suffered from a lack of strong powers at the beginning of the Middle Ages. These attacks added to those of the Hungarians and Avars, to the pressure of Slavic peoples in Eastern Europe and to the Arabs in the South were both the cause and consequence of a period of instability that favored the political decentralization of feudalism.