The story of the people of Anti-Nephi-Lehi (ANL) is one of many examples which demonstrates why a basic knowledge of Book of Mormon geography enriches ones reading of the text.
Upon seeking refuge among the Nephites from their bloodthirsty Lamanite brethren, the Nephites grant land to the people of ANL in Jershon “which joins Bountiful”, and said, “we will set our armies between the land Jershon and the land Nephi, that we may protect our brethren in the land Jershon” (Alma 27:22-23).
Among other examples, Alma 22:29 establishes Bountiful as north of Zarahemla, and Zarahemla as north of the Land of Nephi. Not only do the Nephites grant a portion of their land to these people, they find them land as far away from the Lamanites as was possible in order to keep them safe. This fact is not explicitly spelled out in the text, and without a basic knowledge of Book of Mormon geography it would go unnoticed.
Postscript: A related topic is the meaning of “Jershon” in Hebrew (“to inherit”): https://onoma.lib.byu.edu/onoma/index.php/JERSHON