so how did horses get here again?
They got here the same way steel, chariots, brass, scimitars, and silk production(which STILL doesn't exist over here) did.
Oh...wait...
And those Plates of Ore, some of the metals they were composed of weren't even available/created during the time period the book is supposed to have been written.
It must have been Magic.
Oh yes.
The same kind of magic that allowed 12 adults to build a temple “after the manner of the Temple of Solomon,” when it took Sol himself 180000 workers and over 7 ½ years to accomplish this.
Th same kind of magic that allowed 250,000 words of the BoM to be plagiarised from the King James Bible, a book that was written how long after the book of Mormon?
Beautiful magic that allowed vast battles, raging wars, and entire nations and populations of people forced into extinction without one artifact, one official map, or one example of the language proposed by Joe to be found. Not even remains of any structures relating to any member (Three groups of people who emigrated from the Old World before Columbus) of the story in the book of Mormon.
Maybe they lived in a another, magical world. A world where the land on the Persian Gulf was "found to be bountiful and fruitful", because here it has never been so. A world where American Indians had a coinage system, because, it has never been so. A world where the ancient jews had glass, because in that time period here, they never did.
I can see why some people would want to live in that world. At least, until they found out that their faith teaches:
1.) The god you worship is not held by them to be the one true god. “Teachings of the Prophet Joseph Smith,” p. 345.
2.) Your Jesus practiced polygamy. Journal of Discourses 1:346, 2:210
3.) You must practice polygamy to become a god. Journal of Discourses 11:269
4.) Your God “Elohim” Lives on or near the planet Kolob. One Kolob day is equal to 1000 Earth years.
5.) Your God wants you to wear special underwear, to remind you of your covenants to him.
6.) Church officials are granted the power of telepathy.