Skip to content
Scale Shift

Borders fixed by international law

The world in 1945

The war has just ended. Germany and Korea are divided into occupation zones, and decolonization is about to begin.

Explore 1945 on the map
World map of borders in 1945

Largest in 1945

Areas calculated from the map outlines (≈). Share of Earth's land area including Antarctica.

#State or peopleAreaShare of land
1USSR21,752,992 km² (8,398,878 sq mi)14.6%
2Antarctica12,196,819 km² (4,709,218 sq mi)8.2%
3Canada9,508,823 km² (3,671,377 sq mi)6.4%
4United States9,254,118 km² (3,573,035 sq mi)6.2%
5Brazil8,420,242 km² (3,251,074 sq mi)5.7%
6Australia7,661,590 km² (2,958,157 sq mi)5.1%
7China5,452,574 km² (2,105,251 sq mi)3.7%
8British Raj4,022,737 km² (1,553,188 sq mi)2.7%
9Argentina2,768,905 km² (1,069,080 sq mi)1.9%
10Sudan2,508,088 km² (968,378 sq mi)1.7%
11Belgian Congo2,346,328 km² (905,922 sq mi)1.6%
12Algeria2,309,541 km² (891,719 sq mi)1.6%

What changed since 1938

Comparing the two snapshots. Some differences reflect improved mapping rather than real events, especially before 1500.

Grew the most

  • Turkey498k km² → 791k km²
  • Spanish Sahara101k km² → 266k km²
  • Yemen294k km² → 392k km²
  • Jordan0k km² → 90k km²
  • British Somaliland164k km² → 203k km²
  • Czechoslovakia91k km² → 128k km²

Shrank the most

  • British Raj4,812k km² → 4,023k km²
  • Saudi Arabia2,460k km² → 1,913k km²
  • Ecuador439k km² → 249k km²
  • Poland392k km² → 306k km²
  • Romania297k km² → 232k km²
  • Greece139k km² → 105k km²
  • Finland367k km² → 334k km²

Appeared

  • Antarctica12,197k km²
  • China5,453k km²
  • Algeria2,310k km²
  • Indonesia1,320k km²
  • Chad1,269k km²
  • French Sudan1,250k km²
  • South Africa1,226k km²
  • Niger1,182k km²

Disappeared

  • Republic of China5,453k km²
  • French West Africa4,627k km²
  • Algeria (France)2,310k km²
  • French Equatorial Africa2,157k km²
  • Union of South Africa2,023k km²
  • Empire of Japan1,793k km²
  • Dutch East Indies1,697k km²
  • Libya1,618k km²

Land that changed hands, 1938 – 1945

AnnexationHeld by forceBaltic states

USSR annexes Estonia, Latvia and Lithuania

Control taken
1940
Made official
Never

Never formalized

The Baltic states are occupied in June 1940 and annexed in August. Many Western countries never recognized the annexation. Independence is restored in 1991.

See it on the 1945 map
TreatyMade officialPoland

Poland's borders shift west

Control taken
1945
Made official
1990

45 years from control to formal recognition · German–Polish Border Treaty

At Potsdam the Allies place Poland's western border on the Oder–Neisse line, provisionally. A reunified Germany only confirms it by treaty 45 years later.

See it on the 1945 map
ConquestDisputed todayKuril Islands

Soviet seizure of the Kuril Islands

Control taken
1945
Made official
Not recognized

Never formally settled

Occupied in August–September 1945. Japan still claims the four southernmost islands, and the two countries have never signed a peace treaty.

See it on the 1945 map
Open the interactive map