Which word means to short bit of writing added to the end of a letter

Ijust wanna have a nice conversation while im doing my exam for summer school go ahead and answer if u wanna talk about life

Think about the themes that are developed and emerged through the characters and event in the novel is the cay a story mostly about relationships or survival decide which theme the story is most likely about support your position using specific examples and evidence from the story

Many colonist in america joined army and fought to be free from british rule