That's a valid point, of course. However, abolition of slavery is only a necessary condition, not a sufficient one. Remember e.g. the Black Plague in Europe whi

That's a valid point, of course. However, abolition of slavery is only a necessary condition, not a sufficient one. Remember e.g. the Black Plague in Europe which led to a sharp increase in the value of human resources and caused some positive effects like the rise of free cities, powerful guilds of professionals, and the Renaissance of arts and sciences. However, things stopped short of an industrial revolution: it took some 3 or 4 centuries more to come around.