See, that's my problem. If it's history, it's not credible and the only reason to discuss it is politics.
If we're talking about doctrine, there's really nothing debatable about it. Yeah, God said this land is your land. Doctrinally. But history can't even document the existence of Abraham, never mind God. And if we're going to allow divine real estate transactions to determine land rights, there are probably a handful of Native American believers in the Great Spirit who have a problem or two with our current state borders.
Oh, but THEIR Great Spirit is not God. Got it.