The net product of a nation is the total amount of all commodities and services produced in that nation in a given period of time in excess of the commodities and services that have been required for its production. This definition coincides with the notion of wealth first introduced by Adam Smith (1776). The main difference between the modern concept and the original one concerns wages that we now consider as part of the net product but were initially (and until Marx) included among the advances to be reproduced.
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