This hemispheric, open, liberal and generic use of the term "Lamanite" can help explain many concerns and misunderstandings people may have about the Lamanites.
President Howard W. Hunter made an interesting statement related to Book of Mormon geography quoted in a Deseret News article in 1995
From these two statements it’s clear that Joseph Smith thought the Book of Mormon happened over all of the Americas.
it’s pretty clear that the Promised Land extends from North America to South America. The United States is the Promised Land. Mexico is the Promised Land. Brazil is the Promised Land. Etc.