Yeah, well, that's just, like, your opinion, man. In Manton's opinion, it's clearly the second, since it was, in his (not unjustified) opinion, the white dudes of European descent made modern American society and liberal government possible. Did it mean a world of suck for the North American Indians? Yes, but that's irrelevant to the central point of Manton's thesis. You might not agree with his opinion, but it's scarcely laughable or illogical.