| Border | Country | % Correct |
|---|---|---|
| Canada | United States | 100%
|
| Kosovo | Serbia | 95%
|
| Pakistan | Afghanistan | 92%
|
| Montenegro | Albania | 92%
|
| Nigeria | Niger | 92%
|
| Tunisia | Algeria | 91%
|
| India | Nepal | 91%
|
| Germany | Netherlands | 91%
|
| Sweden | Norway | 91%
|
| Bulgaria | Romania | 91%
|
| Yemen | Oman | 90%
|
| Saudi Arabia | Yemen | 90%
|
| Thailand | Laos | 89%
|
| South Africa | Lesotho | 88%
|
| Libya | Egypt | 87%
|
| Brazil | Suriname | 87%
|
| Mauritania | Senegal | 84%
|
| Iran | Azerbaijan | 82%
|
| China | Tajikistan | 78%
|
| Pacific Ocean | Nauru | 69%
|