Compare the borders formed under the terms of the Treaty of Versailles with modern ones. Which borders were preserved

Compare the borders formed under the terms of the Treaty of Versailles with modern ones. Which borders were preserved and which were then changed? Why do you think?

Under the Versailles Peace Treaty, Germany pledged to return to France Alsace-Lorraine within the borders of 1870 with all the bridges across the Rhine. The coal mines of the Saar Basin became the property of France, and the administration of the region was transferred to the League of Nations for 15 years, after which the plebiscite was to finally decide on the ownership of the Saar. The left bank of the Rhine was occupied by the Entente for 15 years. The territory 50 kilometers east of the Rhine was completely demilitarized. A plebiscite was envisaged in Eupen and Malmedy counties; as a result of it, they went to Belgium. The same was true of the areas of Schleswig-Holstein: they passed to Denmark. Germany recognized the independence of Czechoslovakia and Poland and refused in favor of the first from the Gulchinsky region in the south of Upper Silesia, and in favor of Poland – from some regions of Pomerania, from Poznan, most of West Prussia and part of East Prussia. The question of Upper Silesia was resolved by a plebiscite. Danzig with the region passed to the League of Nations, which undertook to make it a free city. He was included in the Polish customs system. Poland received the right to control the railway and river routes of the Danzig corridor. German territory was divided by the Polish Corridor.