1) He is starting to show how guilty he feels towards other people. He begins to realize how much like Baba he is. Just like Baba, Amir betrayed a very close friend and did not feel guilt at first. To make up for the guilt Baba paid for Hassan's nose repair. Amir after finding out the kids are starving tries to give them money by leaving it around the house.
2) Kabul is completely different becoming a war torn zone. When Amir returns he says he can hardly recognize the city. Buildings are destroyed, beggars every where, some of them children no older than six years. Amir also sees that many of the children are sitting with their mothers and not with a father, due to all the fathers being busy fighting. The kite shops that were once powering businesses no longer appear anywhere in Kabul. All the trees no longer exist because many were cut down in order for people to have firewood, and to reduce the number of snipers. Baba's orphanage that he had built was destroyed a few years before Amir's return. The city no longer has steady electricity so they are forced to use diesel fuel which gives off a terrible smell.
3) In order to feel atonement for what he had done to Hassan, I think Amir will take in Hassan's son to lessen his feeling of guilt. I think that something dramatic will happen to Amir that will open his eye's to everything he has done to the people who loved him the most.
