Do you have an opinion on Scott Wolter’s “America Unearthed” episode where he suggested bronze age people came to a Lake Superior island to mine copper?
There was a lot of precolumbian copper mining in the upper peninsula of Michigan, and it was suggested years ago that it might have been mined and shipped to the Med. Now U.P. copper turns up in digs in Central America. That doesn’t mean it didn’t make it across the Atlantic, but there’s no direct evidence for it.
If it was tin he would have an argument. But copper was common in the Old World. They would be stupid to travel that far for something that was available in their own backyards.