Original sentence: "Recovered Territories", "Regained Territories" or "Western and Northern Territories" () was a term used by Communist Poland's authorities to denote the territories of Germany (within its 1937 borders) which were placed first under Soviet, then subsequently Polish administration after the Second World War.Following World War II the area was occupied by Soviet Union, and most ethnic Germans living in those regions were forcefully expelled or died, and the land was annexed by Poland, as sanctioned by the Potsdam Agreement by the Allies of World War II, especially Soviet Union.The purported rationale for use of the term "Recovered Territories" was that these territories, recorded as Pomerania, Silesia, Lubusz Land, and Warmia-Masuria, had been held by various Polish dukes and kings for many centuries before they came under the control of first Prussia and then the German Empire.These border changes were recognized by East Germany in the 1950 Treaty of Zgorzelec, and generally by West Germany in the 1970 Treaty of Warsaw, and confirmed by united Germany in 1990
Edited sentence: "Recovered Territories", "Regained Territories" or "Western and Northern Territories" () was a term used by Communist Poland's authorities to denote the former German territories, which form a part of Poland since the end of the Second World War.Following the Potsdam Agreement, the Territories were taken under Polish administration, and the ethnic German population was forcefully expelled.In the late stages of this war, the area was occupied by the Red Army.The new border was formally recognized by East Germany in the Treaty of Zgorzelec (1950), by West Germany in the Treaty of Warsaw (1970), and confirmed by the re-united Germany in 1990.The purported rationale for use of the term "Recovered Territories" was that these territories, Pomerania, Silesia, the Lubusz Land, and Warmia-Masuria, had been under the rule of various Polish dukes and kings during the early to high Middle Ages before they became integrated into the Holy Roman Empire and its German successor states