Brigham writes about settling "the American continent."
Brigham Young, Letter to William C. Staines, January 11, 1876, Letterbook 14:125-26, CR 1234 1, CHL
Nor do I expect we shall stop at Arizona, but I look forward to the time when settlements of the Church of Jesus Christ of Latter-day Saints will extend right through to the city of Old Mexico, and from thence on through Central America to the land where the Nephites flourished in the Golden era of their history, and the great backbone of the American continent be filled, north and south, with the cities and temples of the people of God. In this great work I anticipate the children of Nephi, of Laman and Lemuel will take no small part.