“The Bible gives almost no hint of the existence of America during the chaotic end times narrative.”
Actually, it gives NO hint, and God’s gonna strike you down for putting words in His mouth.
“Coastlands” are not words that anyone placed in anybody’s mouth. So God will strike YOU down, blasphemer.
The other possible reference, damned blasphemer you, is the lion and her cubs (Great Britain and her former colonies).
You just never know who the lightning will hit.