Gordon H. Fraser lists a number of purported anachronisms in the Book of Mormon, such as sheep.
Gordon H. Fraser, What Does the Book of Mormon Teach? An Examination of the Historical and Scientific Statements of the Book of Mormon (Chicago: Moody Press, 1964), 90
The facts of life in ancient America, of course, are quite contrary to any of the above. Here are a few of the contrary facts:
No such population ever existed in Ancient America.
No such civilization every existed in America.
the only grain known in America was maize.
Silk was introduced by the Spaniards.
flax for linen was introduced by the British.
The ancient Americans had no beasts of burden.
The ancient Americans had no sheep until they were introduced by the Spaniards.
The ancient Americans had no horses or asses.
elephants were extinct in America before the Jaredites could have gotten here.
The ancient Americans would have no gold or silver until one thousand years after this time. Obviously, they had no steel for swords.