[dufekin]

That's entirely bogus. The last record of the Vikings in Greenland occurred in 1408, although they presumably lasted somewhat longer; perhaps Basque pirates finally annihilated them. But the Little Ice Age was in full swing, taking its toll on European-style animal husbandry as wintertime snowfalls melted later for increasingly fewer pasturage days during the summer. Ice floes usually blocked European fleets from reaching the Greenland settlements, and many (perhaps even most) simply sank and disappeared in the viciously stormy seas.

Greenlanders abandoned the Western Settlement circa the 1350s. The Chinese fleet never reached European shores. Although they *MIGHT* have reached America somewhere, the Chinese could not have circumnavigated Greenland, then an ice-choked island populated solely by Inuit.

[GladesGuru]

Regarding the bogus bit, may I suggest reading a book titled 1421, authored by Gavin Menzes.