The main characters in A Long Walk To Water are: Salva (Park 1), Marial (Park 30), and Salva's Uncle (Park 34).
A Long Walk To Water takes place in a war-torn. environment in Africa (Park 8,9). The main locations are the open path that they must keep following, the river, America and a well.
One of the conflicts in A Long Walk To Water is Salva and the Neuer Tribe. The Neuer Tribe is after all the Dinkas, including Salva. Salva has to run away and jump into life threatening situations to run away from the Neuer Tribe (Park 6,7).
One of the themes in A Long Walk To Water is that you should never give up hope. Salva and others are on the track of dying if they don't find food or water, but when Salva didn't give up hope, he made it to America and helped others (Park 96-99).
The biggest social issue in A Long Walk To Water is dealing with the aftermath of the war. The people of Sudan have to runaway from their homes and travel for hours away from the war (Park 21,22).
The water that Salva helps give people or finds in A Long Walk To Water is a symbol. It symbolizes that you should not give up even in the worst sutituations like when Salva loses his Uncle (Park 63).