World War II expulsions took place within two specific territories: one area annexed to Reich in 1939 and 1941, and another, the General Government, precursor to further expansion of German administrative settlement area. Eventually, as Adolf Hitler explained in March 1941, the General Government would be cleared of Poles, the region would be turned into a "purely German area" within 15–20 years and in place of 15 million Poles, 4–5 million Germans would live there, and the area would become "as German as the Rhineland.[11]