I was under the impression that if you go back far enough to a millennium ago, peasants weren't trading for iron or having a miller grind their grain, and they were definitely spinning their own yarn.
I would welcome correction.
I would welcome correction.
A large part of this was legal ability. If only the "big man" could own a plow there was no point in trying to save up for one. This ability to have your own increased the farms productivity, in turn allowing the family to buy more (but often they would split the farm so two kids could inherit) While you could grind your own grain, often "the big man" wouldn't allow it.