Mormons have multiple wives the amish have a singular wife

Mormons live like your basic everyday folks except no caffeine or alcohol. Their scriptures include "The Book of Mormon", [insert your story of origin here] in 1845 or so in New York state. Amish are more conventionally Christian, and live an intentionally "simple" life, no electrictity or cars. They originated mostly in Germany, I believe. They're heard of most often in Pennsylvania. (You gotta see the movie "Witness" with Harrison Ford.) The similar (but not so aggressively "simple") Mennonites are more spread around the country (I've seen some Mennonites in their horse-drawn buggies within 60-80 miles of Kansas City.)

To put it simply, Amish are a fellowship of Anabaptists that generally live in their own separate communities. When people think of Amish, they usually envision those that are of the Old Order. Old Order Amish do not use most modern conveniences. That is, they don't use automobiles or electricity. The farm using animals to pull their plows horse drawn carriages for transportation. In short they live at a preindustrial revolution level of technology. There are, however, more liberal Amish groups that will use more modern conveniences. There is not an over arching authority governing the various Amish communities. Each one is autonomous and sets it own regulations. I am not particular familiar with their religious doctrine other than that are the reason that they live in communities that are separate from the rest of us. We Latter-day Saints have never been adverse to technological progress. (It was a Mormon that invented television. Another one, one of my great uncles, helped to develop sonar.) We don't live in communities separate from the rest of society. I am sure that there are a number of other differences between us doctrinally, but, again since I am not familiar with the specifics of their doctrines, I really can't comment on that.