History of economic thought died, Engels completed the second volume of "Das Kapital" from his notes. Marx wrote his magnum opus "Das Kapital" (1867) at the British Museum's library in London. Karl Marx begins with the concept of commodities. Before capitalism, says Marx, production was based on slavery – in ancient Rome for example – then serfdom in the feudal societies of medieval Europe. The current mode of labor exchange has produced an erratic and unstable situation allowing the conditions for revolution. People buy and sell their labor as people buy and sell goods and services. People themselves have become disposable commodities. As Marx
Circulating capital production. In contrast to fixed capital, it is used up in every cycle (raw materials, basic and intermediate materials, combustible, energy…). In accounting, the circulating capital comes under the heading of current assets. Building on the work of Quesnay and Turgot, Adam Smith (1776) made the first explicit distinction between fixed and circulating capital. In his usage, circulating capital includes wages and labour maintenance, money, and inputs from land, mines, and fisheries associated with production. According to Karl Marx (second volume of Das Kapital, end of chapter 7) the turnover of capital influences "the processes of production and self-expansion", the