Evidence of pre-Columbian trade and travel is vast. There are so many sources now one wonders where to begin. It didn't take Europeans doing it and writing home about it to make it so for the rest of the world. And there are fascinating studies about the population of South America, where quite a number of years ago now they found (and continue to uncover) archeological evidence of habitation that is far older than the debunked "Bering Land Bridge" theory would allow for.

SRS