Consider how very fortunate we are to be living in this land of America . . . Many great events have transpired in this land of destiny. This was the place where Adam dwelt; this was the place where the Garden of Eden was; it was here that Adam met with a body of high priests at Adam-ondi-Ahman shortly before his death and gave them his final blessing, and the place to which he will return to meet with the leaders of his people (D&C 107:53-57). This was the place of three former civilizations: that of Adam, that of the Jaredites, and that of the Nephites.
Teachings of Ezra Taft Benson, pp.587-588
Firstly, the American continent didn’t even exist in Adam’s time, and the Flood wiped out what land masses would have existed, and completely reshaped the world.
Secondly, Adam never met with any council of priests — there were no such persons during Adam’s time, and there is no biblical evidence that Adam will ever return to earth to meet with anyone.
Thirdly, there is no archaeological evidence that such cultures as Jaredites and Nephites ever existed outside of Joseph Smith’s imagination.