| ANSWER | % Correct |
|---|---|
| Danube | 98%
|
| Nile | 89%
|
| Congo | 83%
|
| Budapest | 81%
|
| Mekong | 80%
|
| Vienna | 80%
|
| Belgrade | 74%
|
| Cairo | 74%
|
| Bratislava | 73%
|
| Khartoum | 71%
|
| Kinshasa | 69%
|
| Niger | 69%
|
| Phnom Penh | 65%
|
| Brazzaville | 64%
|
| Juba | 64%
|
| Vientiane | 63%
|
| Niamey | 55%
|
| Bamako | 51%
|
| Río de la Plata | 42%
|
| Buenos Aires | 41%
|
| Montevideo | 41%
|