Your remarks are intriguing @sidharthabahadur, but I think some details are missing. First, the "Mormon Bible" is not the Bible and should not be referred to as such insomuch that it is considered and believed to be another record of Jesus Christ and His dealings with people in the American (specifically North America; eastern and central US and up into Canada) continents. You may find the following edition interesting, which is a very well researched version that is supposed to be the most true to the original script available: "The Book of Mormon: The Earliest Text" Edition
I am not deeply familiar with Freemason texts, but as far as I have understood it they effectively use the King James Edition of the Bible with some kind of introduction to Freemasonry material with a questions and answers section prepended to the Bible.
I am curious about this topic... Joseph Smith, Jr. began his run in January 1844 for President of the U.S.A. (not sure how solid this article is, but it may be a springboard for research) and was doing exceptionally well in his campaign. This Wikipedia article talks of this, but I have not had time to read/vet it and thus not sure of the quality - since, as we know, most Wikipedia entries cannot be trusted carte blanche and without suspicion of ulterior motives driving their narratives and "research" agendas.
As I understand it, his early running was off to an exceptionally good start and the odds could have very much moved entirely in his favor for a win, but he was assassinated by the Freemasons et al in June 1844. I can nearly guarantee with certainty that if he would have won it would have dramatically changed (improved) the course of history and would have most certainly averted the Civil War.
I am sure that the Freemasons and their controllers and the "powers that be" did not want this... especially when you realize the designs of the Civil War were ultimately realized by and for some very specific folks who used it to split and then control the United States of America. Interesting - and deeply concerning - stuff for sure. It appears to align perfectly with the goals of Cavern Worlders and peculiar timelines regarding the schism between "folktales" and "modern science" and other patterns that can be detected by a study of history...
There are also interesting "rumors" of President Wilford Woodruff being assassinated (poison) by the Bohemian Club (Freemason connection) in September 1889 after grappling with some issues he very much struggled with due to threats/coercion/ultimatums being issued by said "Club".
So to address your original assertion, I might say that the migration / fleeing west was a side effect of much more insidious things going on than most realize...