I am not too sure about that. A market economy? Yes. But what I know as Capitalism depends on a completely different organization of labor, namely "free" worker

I am not too sure about that. A market economy? Yes. But what I know as Capitalism depends on a completely different organization of labor, namely "free" workers to create a market for labor itself. That was true for non-enslaved/white workers at that time but I don't think it makes sense to say it about a whole society when its not true for such a big percentage of the economy.