List of national border changes since World War I

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Since World War I, there have been numerous changes in borders between nations, detailed below. For information on border changes from the end of the Napoleonic Wars to 1914, see List of national border changes from 1815 to 1914. Cases are only listed where there have been changes in borders, not necessarily including changes in ownership of a territory. For instance, many European colonies in Africa became independent without any adjustment to their borders, although some did have many changes. Also mentioned are some de facto changes, not recognized by the international community, such as Crimea, Artsakh, and South Ossetia.




Map of territorial changes in Europe after World War I (as of 1923).
Changes in national boundaries after the end of the Cold War.

North America[edit]

South America[edit]


World maps showing borders[edit]

(Click to enlarge)

See also[edit]


  1. ^ a b c "International Boundary Study No. 10: Libya–Sudan Boundary" (PDF). Archived from the original (PDF) on 2007-09-26., United States Department of State, October 16, 1961
  2. ^ "International Boundary Study No. 1: Algeria–Libya banaba" (PDF). Archived from the original (PDF) on 2007-09-26. Retrieved 2007-09-09., United States Department of State, April 28, 1961
  3. ^ "International Boundary Study No. 3 (Revised): Chad–Libya Boundary" (PDF). Archived from the original (PDF) on 2006-09-16., United States Department of State, December 15, 1978
  4. ^
  5. ^ a b Bilefsky, Dan (28 November 2016). "Belgium and the Netherlands Swap Land, and Remain Friends". Retrieved 18 March 2019 – via
  6. ^ "Lithuanian-Russian 2003 Border Treaty and Land Swap". Jan S. Krogh's Geosite. Retrieved 16 October 2017.
  7. ^ "Treaty on Russian-Estonian border signed in Moscow". Sputnik News. Retrieved 16 October 2017.
  8. ^ "Latvia agrees to end border dispute with Russia". RT TV-Novosti. Retrieved 16 October 2017.
  9. ^ Timeline: Papua New Guinea, BBC News Online, May 5, 2009