Why is finding 'Lamanite' DNA in the America's important?

Since the Book of Mormon record is a true literal historical record, then one would think we should be able to find some evidence in the genetic record to that effect, as the Book itself testifies that..."7 The whole face of the land had become covered with buildings, and the people were as numerous almost, as it were the sand of the sea." (Book of Mormon | Mormon 1:7)This clearly indicates that this is not some small obscure village tucked neatly away in a remote location unknown to scientists, but rather that they literally covered the face of the land. This being the case, even with admixture from their contemporary Asian civilizations of the time, who also inhabited the America's, it seems logical that there would be some evidence for this great and mighty people. Wait until you see the scientific evidence that has come forth after the release of their video. It is nothing short of amazing!  more