Vikings settled Newfoundland a thousand years ago. The natives harassed them until they left after a decade. Even with stone age vs Iron Age numbers matter.
Alex
"There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge."
-- Isaac Asimov