| Country | Least Populous Neighbour | % Correct |
|---|---|---|
| United States | Canada | 99%
|
| China | Bhutan | 96%
|
| India | Bhutan | 96%
|
| Indonesia | East Timor | 95%
|
| Brazil | Suriname | 94%
|
| Mexico | Belize | 93%
|
| Russia | Estonia | 93%
|
| Vietnam | Laos | 93%
|
| Ethiopia | Djibouti | 92%
|
| Pakistan | Afghanistan | 90%
|
| United Kingdom | Ireland | 90%
|
| Egypt | Libya | 90%
|
| Germany | Luxembourg | 90%
|
| Bangladesh | Myanmar | 90%
|
| Italy | Vatican City | 90%
|
| Thailand | Laos | 89%
|
| France | Monaco | 89%
|
| South Africa | Eswatini | 87%
|
| Turkey | Armenia | 86%
|
| Nigeria | Benin | 86%
|
| Myanmar | Laos | 83%
|
| South Korea | North Korea | 82%
|
| Spain | Andorra | 78%
|
| Iran | Armenia | 78%
|
| Colombia | Panama | 77%
|
| DR Congo | Congo | 76%
|
| Argentina | Uruguay | 76%
|
| Tanzania | Burundi | 73%
|
| Algeria | Mauritania | 67%
|
| Kenya | South Sudan | 63%
|