Das Kapital.
he argued that all wealth is produced by labor
Work is the action to move, lift or change the position of something Work is the amount of energy required by a force to move something. Work is measured in foot pounds or joules Power is a...
Two of his most well-known works are The Communist Manifesto and Capital.
His best-known works were "The Communist Manifesto" which he co-authored with Friedrich Engels and "Capital" (Das Kapital).