The Łódź Ghetto, or Litzmannstadt Ghetto, was a Nazi ghetto established by the German authorities for Polish Jews and Roma following the Invasion of Poland. It was the second-largest ghetto in all of German-occupied Europe after the Warsaw Ghetto. Situated in the city of Łódź, and originally intended as a preliminary step upon a more extensive plan of creating the Judenfrei province of Warthegau, the ghetto was transformed into a major industrial centre, manufacturing war supplies for Nazi Germany and especially for the Wehrmacht. The number of people incarcerated in it was increased further by the Jews deported from Nazi-controlled territories.