I think their prophet was full of it...
There is no evidence supporting anything he ever taught... the battle sites, the places, the ruins of great temples and cities in the Mormon bible can't be located or found. The holy books in all the other major religions can be used to verify ancient battle sites and cities, and learn more about history. In fact, many archeologist use them as guides to locate dig spots.
I also think it's odd they believe Native Americans are cut off from God, however, some of them can still be Christian... I don't understand that. Joesph Smith never said God forgave them, and their skin didn't turn to white again... or brown, whatever, because they were from the Middle East.
But the most damning thing about Joseph Smith and his BS is the Book of Abraham... Since archeologists discovered the Rosette Stone and can actually translate ancient Egyptian now, we know Joseph Smith didn't translate it correctly.... err, god didn't tell him the proper translation. I really don't think God told him how to translate, so I think he is full of it...
Book of Abraham - Wikipedia, the free encyclopedia
There's just a lot of little things in Mormonism like that...