And, the Chinese were here before the Vikings, Native Americans and Columbus, though if you also consider the Aleutian's as native Americans, then they beat the Chinese by about a century. There are a couple wonderful books about this written by Gavin Menzies, both of which I have read cover to cover twice. Though some historians categorised his work as pseudohistory, his documentation throughout his writings convinced me that he was right on the money.

All the best,

Gary