What are the most important events in this novel?

There are several important events in Bridge to Terabithia. Jess Aarons and Leslie Burke meet and become friends. They build a fantasyland across the creek in the woods that they call Terabithia, and they play there all the time. In Terabithia, they can forget the rest of the world with the school bullies and Jess’s irritating family. Jess and Leslie's friendship stretches beyond the limits of Terabithia to the school where they are teased for their friendship, but this no longer bothers them because they have each other’s friendship. At home they celebrate holidays together. Jess gives Leslie a puppy for Christmas that she names Prince Terrien, and she gives him an expensive art set to develop his artistic talent. At Easter, Leslie goes to church for the first time with Jess, and she is impressed by the beauty of the story of Christ. Miss Edmunds, the music teacher at school, whom Jess has a crush on, invites him to spend a day with her touring the art galleries in Washington, but when he gets home he is told that Leslie drowned in the creek that morning trying to swing into Terabithia on the rope that they used for that purpose. Jess is devastated and goes through the stages of grief—denial, anger, fear, and sorrow—all incredibly painful to suffer and read about. In the beginning, he does not see how he is to go on, but he brings his little sister May Belle there and makes her its new queen, assuring that a part of Leslie will live on as well.