The map shows the Oder-Neisse-line, that is the border between Germany and Poland after world war 2. The map is made by user Adam Carr on english Wikipedia
DescriptionOder-Neisse 1945.svg English: The map shows the Oder-Neisse-line, that is the border between Germany and Poland after world war 2. The map is
include Glatz/Kladsko/Kłodzko, which was part of Bohemia; the Silesia-Lusatia border was further east (the Oder-Neisseline didn't exist until after WWII).