In the beginning Salva is forced out of his school into the forest and is separated from his family. In the text it says " Go into the bush now all of you!!" Also in the beginning he joins a group of his tribe the Dinka and he depends on them to keep him fed and protected from danger. We see later on that he is left behind in the barn and has to fend for himself. He lets his child side come out and he starts to cry. The text says "The hot tears in Salva's eyes." This proves he is letting his child side come out and he is crying. He does stop and continues to walk and ends up finding an old Dinka woman who is willing to let him stay and he now depends on her to take care of him.
In the middle of A Long Walk To Water we see that Salva has became stronger he is now leading 1500 boys across a dangerous river where there are crocodiles, enemies , and lots and lots of bullets. Even the group realized he became very strong and more independent after his uncle died. When ever his uncle died the group turned on him to lead them, but he was seperated from the group and met the boys and they were called the Lost Boys. They had to cross a very big river and they lost more then half of the boys. When ever they crossed Salva was laying on the beach and was realizing he was 1/1500 boys to survive and he questioned himself why was he one of the lucky boys to survie.
In the end of the book Salva is in a camp in Kenya and he has been there for more than a year and he got news that he is being adopted and being sent to North America. On his way to north America he is given new clothes and when he finally arrives at the airport he meets his family and goes to live with them. Later he gets news that his dad is in the hospital and he needs stomach surgery because he has been drinking bad water. After Salva takes a plane back to South Sudan he decides to help out his village and more villages bye building wells. He has dug 304 wells to this day and is drilling more. In the end Salva went from being a weak little boy to a very strong man.