context: In an attempt to gain increased support from Polish nationalists and patriots, Napoleon termed the war the Second Polish War—the First Polish War had been the Bar Confederation uprising by Polish nobles against Russia in 1768. Polish patriots wanted the Russian part of Poland to be joined with the Duchy of Warsaw and an independent Poland created. This was rejected by Napoleon, who stated he had promised his ally Austria this would not happen. Napoleon refused to manumit the Russian serfs because of concerns this might provoke a reaction in his army's rear. The serfs later committed atrocities against French soldiers during France's retreat.
question: పోలాండ్లోని రష్యన్ భూభాగాలను ఏ జాతీయ సంస్థతో కలపాలని పోలిష్ జాతీయవాదులు కోరుకున్నారు?
answers: the Duchy of Warsaw