[[Friedrich Engels]], whose father was a partner in a cotton firm in the English city of Manchester. Engels supplied Marx with a practical knowledge of the daily workings of capitalism, as well as generous cash subsidies and the one firm intellectual friendship that lasted until death. | [[Friedrich Engels]], whose father was a partner in a cotton firm in the English city of Manchester. Engels supplied Marx with a practical knowledge of the daily workings of capitalism, as well as generous cash subsidies and the one firm intellectual friendship that lasted until death. |