[yongjik]

I'm not so sure about the "easily" part: from [1], most part of Greenland was colonized after Vikings settled on Iceland. So I'd imagine it wasn't exactly a leisurely trip from there to Alaska.

[1] https://en.wikipedia.org/wiki/Thule_people

[aksss]

It would have been a series of trade network hops, not an express route by one guy. So traded from one village to the next over and over westwards. Going from Venice over the Silk Road and up through Siberia and into Alaska, or up through Eastern Europe into northern Asia and across Siberia, probably would have involved fewer exchanges though, I’d guess. Either way, that bead is a looong way from Venice. :D