The Book of Mormon describes Laban's steel sword, which would have existed in 600 BCE.  Were there steel swords in Jerusalem then, or is the Book of Mormon wrong?  The Book of Mormon also mentions horses during the Nephite period and elephants during the Jaredite period.  Is the Book of Mormon wrong on these points or is there scientific evidence to back it up?

The earliest known steel sword (iron plus carbon) currently known in the world, was found in archaeological digs at Jerusalem, and dates to about 650 BCE.  Steel swords in Jerusalem in 600 BCE in the Book of Mormon have thus been vindicated.

National Geographic, Scientific American, and excavations at the La Brea tar pits near Los Angeles, California, demonstrate Woolly Mammoths (elephants) and horses existed in the New World after the last ice age and before Columbus.  Again, the Book of Mormon descriptions are scientifically demonstrated to be plausible and not anomalies.