>Indians had no trouble crisscrossing America Well yeah there weren't any human infectious illness where... there aren't any humans. This video explains the h

>Indians had no trouble crisscrossing America Well yeah there weren't any human infectious illness where... there aren't any humans. This video explains the history of man kind's infectious illness very well https://www.youtube.com/watch?v=JEYh5WACqEk https://www.youtube.com/watch?v=JEYh5WACqEk