哥伦布前的美洲

National Geographic embarks on an expedition into the mysterious world of ancient American history t[展开全部]

　National Geographic embarks on an expedition into the mysterious world of ancient American history to shed a different light on the history of the Americas.　　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 ash...[收起部分]