• Description: Former Eastern Bloc area border changes between 1938 and 1948.
• Source: Map borders primarily based on File:EC12-1986 European Community map.svg and File:Blank map of Europe in 1920.svg.
• Author: Mosedschurte, June 1, 2009

The border and other changes include:

• The creation of the satellite states (note: this was before the Tito-Stalin split and the Hoxha 1960 split)
• The annexation of the Baltic states
• The annexation of the Moldavian SSR
• The Transnistria exchange between the Ukrainian SSR and the Moldavian SSR
• The annexation of northern Bukovina, the Hertza region and northern Bessarabia.
• The annexation of the Izmail Oblast
• The Territories of Poland annexed by the Soviet Union
• The transfer of part of East Prussia and the territories east of the Oder-Neisse line from Germany to Poland
• The annexation of the Kaliningrad Oblast
• The transfer of Southern Dobruja from Romania to Bulgaria
• The Bratislava Bridgehead transfer from Hungary to Czechoslovakia
• The transfer of the Latvian eastern Abrene district to the RSFSR
• The transfer of Estonian territories north and South of Lake Peipus to the RSFSR
• The annexation of the Vilnius region from Poland to the Lithuanian SSR
• The annexation of part of the Karelo-Finnish SSR
• The annexation of Carpathian Ruthenia
• The transfer of the Italian Istria peninsula to Yugoslavia.