Factory sealed DVD</br></br>Product Description</br></br>History books traditionally depict the pre-Columbus Americas as a pristine wilderness where small native villages lived in harmony with nature. But scientific evidence tells a very different story: When Columbus stepped ashore in 1492?? millions of people were already living there. America wasn't exactly a "ew World??"but a very old one whose inhabitants had built a vast infrastructure of cities?? orchards?? canals and causeways.</br><br/>http://www.amazon.com/gp/product/B0032LV4LSkk