It completely ignores all those who were enslaved, exploited, and colonized to produce this myth.
The Invisible Hand and the right-wing, Evangelical/American Catholic Christian god occupy the same position: as the dealer of benevolent reward to believers, and punishment to non-believers (including homosexuals, pro-choicers, feminists, godless socialists, etc).
This is why the Invisible Hand rewards the wealthy and punishes the poor: the wealthy have demonstrated their value as Christians of capitalism; the poor are deserving of their lot, as obviously they don’t believe enough in the system to let the Invisible Hand/God help them.
Of course, this isn’t the theology of the charitable Christian whose poor & meek shall inherit the Earth — though perhaps so if interpreted as: the poor & meek shall inherit what is left of the planet after the wealthy have plundered it, stripping the planet bare and exhausting its resources, thereby bringing about the End Times — during which the wealthy Christian elite are zipped up to Heaven during the Rapture.
For more on this documented, direct connection between Christian theoconservatives and right-wing neoliberal capitalism, and how this ties into the Bush regime, the invasion of Iraq, the privatization of the US military, and the rise of Christian mercenary armies, see economic questions (and crises, such as the one we are in right now — climate change!
The growing and provision of grain requires collective efforts, which requires not only small-scale trade but coordinated agricultural efforts.