The Nine Realms hung on the branches, or else grew from the roots and bole of Yggdrasil, the world tree, which gave structure and form to the cosmos. Their position within Yggdrasil determined both their core characteristics and their connections to other realms. Though the realms were distinct from one another, their boundaries were surprisingly porous. Intrepid travelers, both mortal and divine, could and did traverse the liminal spaces between worlds. Asgard and Midgard were connected via the great rainbow bridge known as the Bifrost, making it possible for deities to influence the humans who adored and abhorred them in equal measure....<<<Read More>>>...