grindael wrote:Even B.H.Roberts agrees with me (another of those dang "authorities"):
The next important event affecting the movement of population and the possession of the land north and south was a war between the Nephites and Lamanites, that began with the invasion of Nephite lands by the Lamanites in 35 B.C....
B.H. Roberts agrees with you on what? Context please. Your whole excerpt starts, at its earliest point, describing events that took place decades after the Nephite exodus under Hagoth. Thus it doesn't even touch on those who left the Americas before then. In that context, your citations is clearly restricted to those Nephites who remained behind in Nephite territory. Apples and oranges. But let's continue with your quote anyway.
Shortly after these great cataclysms the Savior made his appearance among the Nephites and established his Church, which event was followed by a long period of righteousness and the loss of all race and party distinctions, such as "Nephite" and "Lamanite," etc.; and the people occupied the lands north and south without restraint according to their good pleasure.... [Centuries later, ] the Nephites at last having been driven from their southern strongholds in the north continent, proposed through their leader, Mormon, that they be permitted to gather their people at Cumorah--the Ramah of the Jaredites--that they might trust their fate to the dreadful dreadful arbitrament of one great conflict. The request was granted; the hosts were gathered, the armies which fought under the Nephite name were destroyed, save such as were mingled with the Lamanites. Anarchy followed, and then savagery for ages claimed the western hemisphere as its own. B. H. Roberts, New Witnesses for God, Vol.2, Ch.12, p.202 - p.207
Grindael, that quote merely states that all of the Nephite army which fought under Mormon was killed with the exception of those of Mormon's army who joined the Lamanites. Note: this all took place centuries after Hagoth's ships left the scene. Again, your citation doesn't even address or touch upon the Nephite colonists who headed out of Dodge in their much earlier exodus. If you read the rest of the book you've cited, which perhaps you already have, B.H. Roberts affirms his belief that at least some of Hagoth's ships survived their journey.