| Answer | % Correct |
|---|---|
| Dnieper | 81%
|
| Vistula | 78%
|
| Dniester | 66%
|
| Neman/ Memel | 66%
|
| Daugava/ Dvina | 64%
|
| Pripyat | 49%
|
| Warta | 49%
|
| Western Bug | 38%
|
| Southern Bug/ Buh | 34%
|
| Tisza | 31%
|
| Prut/ Pruth | 27%
|
| Neris | 23%
|
| Berezina | 21%
|
| Desna | 14%
|
| Inhulets | 13%
|
| Horyn/ Haryn | 11%
|
| Seym | 11%
|
| Styr | 11%
|
| Sozh | 10%
|
| Psel | 7%
|