Did they teach the native northern tribes about long houses and fort walls? I think they traveled further inland than they are given credit for. (Before the Italian/Spanish and English arrived.)Hmmmmmmm? Did native tribes with blue eyes exist?
Maybe. The Viking longhouses and the Native American longhouses are constructed quite a bit differently, but that could just be a case of a group with less sophisticated construction techniques making a copy of something and having to make adaptations to the design to accomplish it.
There are also tribes of Pacific indians that build longhouses too, but they actually use timber, which is closer to the Viking style, even though we can be quite certain they had no contact with the Vikings. So who knows?
There were reports of blue-eyed, even blonde indians, for example, in the Mandan tribe. But modern genetics suggests that the genes for blue eyes and blonde hair originated in Siberia, which is where we think the ancestors of Native Americans departed the Old World from. So did those genes come from European contact or were they just a very rare recessive trait that the indians always carried with them, but had mostly been “bred out” by the time we ran into them? Or did the indians get them from even older Europeans that came here long before the Vikings?