... In Mieroslawski  you will notice yourself: 1) that the same person who considers a diplomatic kingdom in Poland impossible wanted to make there a diplomatic revolution , that is, under the auspices of Louis Bonaparte and Palmerston; 2) that the fate of the democratic Lechitic community was inevitable. The dominium proper is usurped by the crown, the aristocracy, etc; the patriarchal relations between the dominium and the peasant communities lead to serfdom; optional parcellation creates a sort of peasant middle class, the Equestrian Order,  to which the peasant can rise only so long as war of conquest and colonisation continue, both of which, however, are also conditions which accelerate his downfall. As soon as the limit has been reached this Equestrian Order, incapable of playing the role of a real middle class, is transformed into the lumpen-proletariat of the aristocracy. The dominium and the peasants among the Latin population of Moldavia, Walachia, etc, have a similar fate. This kind of development is interesting because here serfdom can be shown to have arisen in a purely economic way, without the intermediate link of conquest and racial dualism...
Marx-Engels Correspondence 1856