The database of the POLIN Museum of the History of Polish Jews provides information on 1,926 Jewish communities across the country.[26] Following the conquest of Poland and the 1939 murder of intelligentsia,[27] the first German anti-Jewish measures involved a policy of expelling Jews from Polish territories annexed by the Third Reich.[28] The westernmost provinces, of Greater Poland and Pomerelia, were turned into new German Reichsgaue named Danzig-West Prussia and Wartheland,[29] with the intent to completely Germanize them through settler colonization (Lebensraum).[30] Annexed directly to the new Warthegau district, the city of Łódź absorbed an initial influx of some 40,000 Polish Jews forced out of surrounding areas.[31] A total of 204,000 Jewish people passed through the ghetto in Łódź.