Answer:
In Antigone the Chorus at times directly affects the action of the play. The main functions of the Chorus are to comment on the action of the play, give back story, and to connect the play to other myths. Sophocles also uses the Chorus to expound upon the play's central themes.
The purpose of the chorus is to provide background information or summarize what is currently happening in the story. Usually in the form of a song. They do not interact with characters in the story.
U.S is a large land and powerful so they are involved in many historic events. Plus they have different resources and goods.
It's the problem or problems in the story.
