I say that largely because they appear obsessed to this day with a message other than the good news of the resurrection and its implications. Of course, they should repent. But they don't. The shape of the Earth offers no solace to their eternal journey. No, does the deadness of Mars offer solace to the souls that could have been made from it's rocks? Will the dust rise up on judgment with the excuse "But, Your Deity, You have not taken into account how difficult my habitat was. How could I obey the math unto life, oh Lord, Lord?" No, Americans may be going to hell en Massey, and God will almost certainly give no concern to which side of the Earth they were. There are exceptions to the exceptions to Old Testament Law, and Americans violate with impunity.
Mesoamerica flourished. Why not North? No excuse. Death without resurrection in the Lakota myth about the white buffalo woman. They may have then (just as they have now) simply refused to listen to the message of the resurrection and its implications. All they latched onto? The implications of the shape of the Earth for their future. They listened to nothing but the curse that - humanly speaking - resulted from their own misbehaving.
Look, if anyone in America is at fault for lack of immunity to disease and lack of technology, it's the North! No light bulb went on inheir heads when they interacted with the Vikings in Greenland, for example? Apparently, not the right light bulb.
And that's not to mention the island chain on the other side stretching from Alaska. No. Nothing. Tens of thousands of years go by and the North Americans? Dancing around with few clothes on worshipping albino buffalo. Absurd! Not right in the head. If a fool's errand to speak to them, understand: the messenger (imperfection assumed) may only be a fool due to audience error. You can't save some people, unfortunately, but, if you warn them to repent, perhaps, their blood is not on your head?