True. But that shows that Euro-Americans were a more technologically advanced culture, not a "Christian" nation.
"Nothing would have stopped the land appropriation of North America."
True. But that says that Euro-Americans were a far more populous, better-armed and better politically organized nation, not a "Christian" nation.
"Not a Christian nation" was his point.
America was largely at war with Native Americans for many decades - and both sides practiced total destruction - not unlike Sherman's March to the sea. But google this, great PBS/BBC Documentary on what makes Western Civilization great:
'Civilizations: The West and the Rest'