| Border | Country | % Correct |
|---|---|---|
| United States | Mexico | 95%
|
| United States | Canada | 94%
|
| Canada | United States | 93%
|
| Russia/China | Kazakhstan | 92%
|
| Russia/China | Mongolia | 92%
|
| Brazil | Argentina | 91%
|
| Russia/China | North Korea | 91%
|
| Russia | Ukraine | 91%
|
| Russia/Kazakhstan | China | 90%
|
| China/India | Pakistan | 90%
|
| China/India | Nepal | 89%
|
| Russia | Finland | 88%
|
| Brazil/Argentina | Uruguay | 88%
|
| Brazil | Colombia | 87%
|
| Russia | Belarus | 86%
|
| China/India | Bhutan | 86%
|
| Brazil/Argentina | Paraguay | 86%
|
| China | Afghanistan | 85%
|
| Russia | Estonia | 85%
|
| Russia | Latvia | 85%
|
| Russia | Lithuania | 85%
|
| Brazil | Venezuela | 85%
|
| China | Vietnam | 85%
|
| Brazil/Argentina | Bolivia | 84%
|
| China/Kazakhstan | Kyrgyzstan | 84%
|
| Brazil | Peru | 84%
|
| Brazil | Guyana | 83%
|
| China | India | 83%
|
| Brazil | Suriname | 83%
|
| Russia | Azerbaijan | 82%
|
| China | Russia | 82%
|
| China | Tajikistan | 82%
|
| China/India | Myanmar | 81%
|
| Kazakhstan | Uzbekistan | 81%
|
| India | Bangladesh | 80%
|
| Russia | Georgia | 80%
|
| Algeria | Morocco | 80%
|
| China | Laos | 79%
|
| Algeria | Mali | 77%
|
| Kazakhstan | Turkmenistan | 77%
|
| Russia | Poland | 76%
|
| Algeria | Tunisia | 76%
|
| Argentina | Chile | 75%
|
| Algeria | Libya | 75%
|
| Russia | Norway | 75%
|
| Brazil | France | 73%
|
| Algeria | Mauritania | 71%
|
| Algeria | Niger | 71%
|