DID THE CHINESES DISCOVERY AMERICA ?

The information that we have about  the discovery  of  america, was discovery  by Christopher Columbus.But now, an amateur  historian,Gavin Menzies  has theorized that the chinese made the discovery of america.

Look this map :

Map Proof Chinese Discovered America?

Antiquities collector Liu Gang unveiled the map in Beijing , saying it proves that Chinese seafarer Zheng He discovered America more than 70 years before Christopher Columbus set foot in the New World.

THE OLD CHINESE CHIP.