| river | countries | % Correct |
|---|---|---|
| Moselle | Germany | 91%
|
| Oder | Germany | 91%
|
| Inn | Germany | 91%
|
| Niger | Nigeria | 91%
|
| Oder | Poland | 90%
|
| Amur | Russia | 89%
|
| Dnieper | Ukraine | 89%
|
| Zambezi | Zambia | 88%
|
| Zambezi | Zimbabwe | 88%
|
| Amur | China | 86%
|
| Inn | Austria | 82%
|
| Dnieper | Belarus | 82%
|
| Zambezi | Botswana | 82%
|
| Moselle | Luxembourg | 80%
|
| Iguazu | Argentina | 78%
|
| Iguazu | Brazil | 78%
|
| Niger | Benin | 74%
|
| Shatt al-Arab | Iran | 74%
|
| Shatt al-Arab | Iraq | 74%
|
| Zambezi | Namibia | 74%
|
| Morava | Czechia | 72%
|
| Morava | Slovakia | 72%
|
| Douro | Portugal | 68%
|
| Douro | Spain | 68%
|
| St Clair | United States | 63%
|
| St Clair | Canada | 62%
|
| Drava | Croatia | 57%
|
| Drava | Hungary | 56%
|
| Meriç or Evros | Greece | 54%
|
| Meriç or Evros | Turkey | 53%
|