For 10 points, name this German philosopher who co-authored Das Kapital with Karl Marx.
The concept that monogamous marriage originated from the economic constraints is outlined in this philosopher's The Origin of the Family, Private Property, and the State. This philosopher also published a work entitled Herr Eugen Dühring's Revolution in Science. This philosopher outlined the "grim future of…the industrial age" in a work titled The Conditions of the Working Class in England in 1844. Another of his collaborations begins with a part entitled "Commodities and Money," a work in which he discusses the folly of capitalism. For 10 points, name this German philosopher who co-authored Das Kapital with Karl Marx.
The concept that monogamous marriage originated from the economic constraints is outlined in this philosopher's The Origin of the Family, Private Property, and the State.
Friedrich {Engels}