There are a couple of things here to prop up your comment:
* The BOM mentions multiple disconnected societies that go way way back and over simplified them with the label Jaredites.
* That over simplification of the Jaredites is present at the beginning of the Bible’s Genesis too when Able was cast out and went to one of two neighboring cities. That indicates others outside the faith existed in the locality of the faith but were largely ignored, perhaps a perspective thing. These weren’t meant to be history books.
* The BOM itself is a self described radically abridged work. The book describes at one point a small library worth of religious texts, social history, and likely a variety of secular things that people find more practical day to day. These works were lost during a social collapse. The BOM is a tiny portable collection of religious works taken and compiled by a guy named Mormon and carried by his son Moroni. The word portable there is debatable because the book was made of gold and gold is ridiculously heavy, but nonetheless the book describes being hand carried some distance.
* The BOM mentions multiple disconnected societies that go way way back and over simplified them with the label Jaredites.
* That over simplification of the Jaredites is present at the beginning of the Bible’s Genesis too when Able was cast out and went to one of two neighboring cities. That indicates others outside the faith existed in the locality of the faith but were largely ignored, perhaps a perspective thing. These weren’t meant to be history books.
* The BOM itself is a self described radically abridged work. The book describes at one point a small library worth of religious texts, social history, and likely a variety of secular things that people find more practical day to day. These works were lost during a social collapse. The BOM is a tiny portable collection of religious works taken and compiled by a guy named Mormon and carried by his son Moroni. The word portable there is debatable because the book was made of gold and gold is ridiculously heavy, but nonetheless the book describes being hand carried some distance.