According to the archaeological and historical records of the Americas, horses simply were not extant anywhere in the Americas during the time periods of either the Jaredites or the Nephites.  Yet the words horse and horses occur fourteen times in the Book of Mormon.  If the Book of Mormon is indeed a real account about real people who lived somewhere in the Americas, readers of the Book of Mormon should naturally expect logical explanations for occurrences of the words horse and horses in the Book of Mormon.