In the early part of the book, Charley is confident that he is not going to be hit or killed. Later he comes to believe that he will die. At what point does the shift happen, and what causes it? (This is about the book Soldier's Heart)

Why was the united states motivated to establish the open door policy? a. the policy guaranteed american commerce with china. b. the policy supported the chinese nationalist cause. c. the policy led to a gain of american colonies in asia. d. the policy claimed damages from the chinese.