| Country | Longest Border | % Correct |
|---|---|---|
| Azerbaijan | Armenia | 100%
|
| Armenia | Azerbaijan | 100%
|
| India | Bangladesh | 100%
|
| Lithuania | Belarus | 100%
|
| Brazil | Bolivia | 100%
|
| Croatia | Bosnia and Herzegovina | 100%
|
| Bolivia | Brazil | 100%
|
| France | Brazil | 100%
|
| Greece | Bulgaria | 100%
|
| Argentina | Chile | 100%
|
| Bosnia and Herzegovina | Croatia | 100%
|
| Germany | Czech Republic | 100%
|
| Angola | Democratic Republic of the Congo | 100%
|
| Belgium | France | 100%
|
| Austria | Germany | 100%
|
| Czech Republic | Germany | 100%
|
| Denmark | Germany | 100%
|
| Albania | Greece | 100%
|
| Belize | Guatemala | 100%
|
| Bangladesh | India | 100%
|
| Bhutan | India | 100%
|
| Estonia | Latvia | 100%
|
| Latvia | Lithuania | 100%
|
| China | Mongolia | 100%
|
| Algeria | Morocco | 100%
|
| Benin | Nigeria | 100%
|
| Afghanistan | Pakistan | 100%
|
| Bulgaria | Romania | 100%
|
| Belarus | Russia | 100%
|
| Finland | Russia | 100%
|
| Georgia | Russia | 100%
|
| Kazakhstan | Russia | 100%
|
| Kosovo | Serbia | 100%
|
| Hungary | Slovakia | 100%
|
| Andorra | Spain | 100%
|
| Italy | Switzerland | 100%
|
| Liechtenstein | Switzerland | 100%
|
| Ireland | United Kingdom | 100%
|
| Canada | United States | 100%
|
| Morocco | Algeria | 83%
|
| Democratic Republic of the Congo | Angola | 83%
|
| Chile | Argentina | 83%
|
| Luxembourg | Belgium | 83%
|
| Montenegro | Bosnia and Herzegovina | 83%
|
| Colombia | Brazil | 83%
|
| Guyana | Brazil | 83%
|
| Nigeria | Cameroon | 83%
|
| Myanmar | China | 83%
|
| Mongolia | China | 83%
|
| North Korea | China | 83%
|
| Central African Republic | Democratic Republic of the Congo | 83%
|
| Republic of the Congo | Democratic Republic of the Congo | 83%
|
| Haiti | Dominican Republic | 83%
|
| Israel | Egypt | 83%
|
| Libya | Egypt | 83%
|
| Djibouti | Ethiopia | 83%
|
| Eritrea | Ethiopia | 83%
|
| Monaco | France | 83%
|
| Equatorial Guinea | Gabon | 83%
|
| Netherlands | Germany | 83%
|
| North Macedonia | Greece | 83%
|
| Guinea-Bissau | Guinea | 83%
|
| Dominican Republic | Haiti | 83%
|
| El Salvador | Honduras | 83%
|
| Nepal | India | 83%
|
| East Timor | Indonesia | 83%
|
| Iraq | Iran | 83%
|
| Iran | Iraq | 83%
|
| Kuwait | Iraq | 83%
|
| Liberia | Ivory Coast | 83%
|
| Ivory Coast | Liberia | 83%
|
| Brunei | Malaysia | 83%
|
| Indonesia | Malaysia | 83%
|
| Burkina Faso | Mali | 83%
|
| Guinea | Mali | 83%
|
| Guatemala | Mexico | 83%
|
| Botswana | Namibia | 83%
|
| Honduras | Nicaragua | 83%
|
| Cameroon | Nigeria | 83%
|
| Niger | Nigeria | 83%
|
| Costa Rica | Panama | 83%
|
| Ecuador | Peru | 83%
|
| Gabon | Republic of the Congo | 83%
|
| Jordan | Saudi Arabia | 83%
|
| Gambia | Senegal | 83%
|
| Ethiopia | Somalia | 83%
|
| Lesotho | South Africa | 83%
|
| Chad | Sudan | 83%
|
| Egypt | Sudan | 83%
|
| Norway | Sweden | 83%
|
| Lebanon | Syria | 83%
|
| Burundi | Tanzania | 83%
|
| Ghana | Togo | 83%
|
| Kenya | Uganda | 83%
|
| Moldova | Ukraine | 83%
|
| Cyprus | United Kingdom | 83%
|
| Mexico | United States | 83%
|
| Kyrgyzstan | Uzbekistan | 83%
|
| Cambodia | Vietnam | 83%
|
| Laos | Vietnam | 83%
|
| Namibia | Angola | 67%
|
| Panama | Costa Rica | 67%
|
| Poland | Czech Republic | 67%
|
| Nicaragua | Honduras | 67%
|
| Pakistan | India | 67%
|
| Malaysia | Indonesia | 67%
|
| Papua New Guinea | Indonesia | 67%
|
| Mozambique | Malawi | 67%
|
| Mauritania | Mali | 67%
|
| Mali | Mauritania | 67%
|
| Malawi | Mozambique | 67%
|
| Oman | Saudi Arabia | 67%
|
| Portugal | Spain | 67%
|
| Paraguay | Argentina | 50%
|
| Peru | Brazil | 50%
|
| Uruguay | Brazil | 50%
|
| Venezuela | Brazil | 50%
|
| Romania | Bulgaria | 50%
|
| United States | Canada | 50%
|
| Slovenia | Croatia | 50%
|
| Zambia | Democratic Republic of the Congo | 50%
|
| Somalia | Ethiopia | 50%
|
| Slovakia | Hungary | 50%
|
| Turkey | Iran | 50%
|
| United Kingdom | Ireland | 50%
|
| San Marino | Italy | 50%
|
| Switzerland | Italy | 50%
|
| Vatican City | Italy | 50%
|
| Russia | Kazakhstan | 50%
|
| Serbia | Kosovo | 50%
|
| South Korea | North Korea | 50%
|
| Sweden | Norway | 50%
|
| Spain | Portugal | 50%
|
| Ukraine | Russia | 50%
|
| Qatar | Saudi Arabia | 50%
|
| Sudan | South Sudan | 50%
|
| South Sudan | Sudan | 50%
|
| Tajikistan | Afghanistan | 33%
|
| Tunisia | Algeria | 33%
|
| South Africa | Botswana | 33%
|
| Rwanda | Burundi | 33%
|
| Togo | Ghana | 33%
|
| Sierra Leone | Guinea | 33%
|
| Suriname | Guyana | 33%
|
| Uzbekistan | Kazakhstan | 33%
|
| Tanzania | Kenya | 33%
|
| Uganda | Kenya | 33%
|
| Vietnam | Laos | 33%
|
| Senegal | Mauritania | 33%
|
| Thailand | Myanmar | 33%
|
| United Arab Emirates | Saudi Arabia | 33%
|
| Yemen | Saudi Arabia | 33%
|
| Eswatini | South Africa | 33%
|
| Syria | Turkey | 33%
|
| Turkmenistan | Uzbekistan | 33%
|
| Saudi Arabia | Yemen | 33%
|
| Zimbabwe | Mozambique | 17%
|