| Year | Formerly | Became | % Correct |
|---|---|---|---|
| 1910 | Mexico | United States | 98%
|
| 1912 | Mexico | United States | 98%
|
| 1915 | Panama | United States | 98%
|
| 1917 | Denmark | United States | 98%
|
| 1918 | Panama | United States | 98%
|
| 1919 | Panama | United States | 98%
|
| 1910 | Korea | Japan | 94%
|
| 1919 | Germany | Japan | 94%
|
| 1918 | Austria-Hungary | Austria | 88%
|
| 1912 | Qing China | China | 88%
|
| 1919 | Austria-Hungary | Hungary | 88%
|
| 1918 | Russia | Poland | 88%
|
| 1919 | Lithuania | Poland | 88%
|
| 1919 | Germany | Poland | 88%
|
| 1919 | Austria-Hungary | Poland | 88%
|
| 1913 | Bulgaria | Romania | 88%
|
| 1918 | Austria-Hungary | Romania | 88%
|
| 1919 | Austria-Hungary | Romania | 88%
|
| 1919 | Bulgaria | Romania | 88%
|
| 1919 | Germany | United Kingdom | 88%
|
| 1912 | Wadai | France | 85%
|
| 1919 | Germany | France | 85%
|
| 1911 | France | Germany | 85%
|
| 1913 | Ottoman Empire | Greece | 85%
|
| 1919 | Bulgaria | Greece | 85%
|
| 1919 | Austria-Hungary | Czechoslovakia | 83%
|
| 1919 | Austria-Hungary | Italy | 83%
|
| 1919 | France | Italy | 83%
|
| 1917 | Russia | Finland | 79%
|
| 1918 | Serbia | Kingdom of Serbs, Croats, and Slovenes | 79%
|
| 1919 | Bulgaria | Kingdom of Serbs, Croats, and Slovenes | 79%
|
| 1918 | Austria-Hungary | Kingdom of Slovenes, Croats, and Serbs | 79%
|
| 1919 | Germany | Belgium | 77%
|
| 1913 | Ottoman Empire | Bulgaria | 77%
|
| 1913 | Ottoman Empire | Bulgaria | 77%
|
| 1918 | Russia | Estonia | 77%
|
| 1918 | Russia | Latvia | 77%
|
| 1918 | Russia | Lithuania | 77%
|
| 1913 | Ottoman Empire | Serbia | 75%
|
| 1918 | Montenegro | Serbia | 75%
|
| 1918 | Transcaucasian Federation | Azerbaijan | 71%
|
| 1918 | Transcaucasian Federation | Armenia | 69%
|
| 1918 | Transcaucasian Federation | Georgia | 69%
|
| 1910 | Kasanje | Portugal | 69%
|
| 1919 | Germany | Portugal | 69%
|
| 1912 | France | Spain | 67%
|
| 1912 | Ottoman Empire | Albania | 65%
|
| 1913 | Ottoman Empire | Albania | 65%
|
| 1910 | United States | Mexico | 65%
|
| 1912 | United States | Mexico | 65%
|
| 1911 | Qing China | Mongolia | 58%
|
| 1919 | Germany | Australia | 54%
|
| 1910 | United Kingdom | South Africa | 50%
|
| 1919 | Germany | South Africa | 50%
|
| 1913 | Austria-Hungary | Montenegro | 44%
|
| 1919 | Germany | New Zealand | 44%
|
| 1913 | Bulgaria | Ottoman Empire | 42%
|
| 1918 | Denmark | Iceland | 40%
|
| 1913 | China | Tibet | 33%
|
| 1919 | United Kingdom | Afghanistan | 27%
|
| 1915 | United States | Panama | 25%
|
| 1918 | Ottoman Empire | North Yemen | 23%
|
| 1919 | Germany | Danzig | 13%
|
| 1918 | Russia | Transcaucasian Federation | 10%
|
| 1917 | Russia | Chechenia | 2%
|