Who were the ancient Mormons. Aztecs, Incas, or Myans?

Ok, so when I was Mormon, the indians and myans and incas, were all Jews that came over in a boat as state din the book of Mormon story and then a great war and almost genoci, anyways...then Cortez shows up and they think he is the great WHITE spirit, before the internet or the DNA evidence this proved that the book of Mormon was true but the DNA evidence came out and the indians seem to be asian now and came over on some bridge not on a boat, so the mormons have donw an about face and said that the jews married women from foreign lands and so the indians are now Asians, OK?!