What is the theme of the book called sink or swim

The theme is along the line of courage and hope. The book takes place during the time period of world war two, a major turning point. The boy faces many challenging occurrences that require bravery and hope.

you really need to put more information in your (question); /// i believe you are talking about ///creek traveler"s rest, about lewis and clark not good

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.