Which marketing strategy helped the Norse mythology spread most effectively throughout Northern Europe during the Viking Age (800-1100 CE)?

In the realm of mythology and folklore, ancient stories have been 'marketed' across generations, becoming some of the most enduring 'products' in human history. These narratives have used various strategies to remain relevant and memorable for thousands of years. Test your knowledge about how mythological stories were effectively 'marketed' and distributed across ancient civilizations, creating powerful brand recognition that persists to this day.

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Runic inscriptions on commercial goods and trading posts
Oral storytelling through traveling skalds (poet-historians) who performed at feasts and gatherings
Distribution of illustrated manuscripts to noble households
Annual religious festivals that included dramatic reenactments of myths