Norse pagan worship is the traditional religious rituals practiced by Norse pagans in Scandinavia in pre-Christian times, Christianity, during the conversion period, was referred to as "nýr sidr" (the new custom), the conversion period is speaking in regards to which titled event, that took place between the 8th and the 12th centuries, and the realms of Scandinavia proper, Denmark, Norway and Sweden, established their own Archdioceses, responsible directly to the Pope?