Karl Marx’s book Capital was published 150 years ago, on 14 September 1867, the fruits of over fifteen years’ study.
Marx was then fairly well-known in the European and US workers’ movements, through his activity in the First International, founded in September 1864. His Communist Manifesto of 1848, which had become a rarity since revolutionary socialist activity receded in the early 1850s, had been republished and translated, and was circulating well.
Capital appeared first in a German edition. There was no “Marxist” group in Germany at the time