b) The estate of trade has, as its business, the formation of the natural product, and, for the means of its subsistence, is dependent on its own labour, on reflection and the understanding, as well as, essentially, on mediation with the needs and the labour of others. What it brings forth and enjoys, it has chiefly to thank itself, its own activity, for. Its business further differentiates itself — as labour for individual needs, in a more concrete manner and at the demand of individuals, into the craft estate; as the more abstract, general mass of labour for individual needs, but of a more general requirement, into the manufacturing estate; and, as the business of exchanging isolated means against one another, chiefly through the universal medium of exchange, money, in which the abstract value of all goods is made actual, into the commercial estate.