A compare and contrast essay would be the best option here. Using this type of essay, you can highlight the similarities in each novel by comparing specific aspects of them. Hope this is the answer you were looking for and that I could help!
This was an event in Vonnegut's own life, and the novel is
considered semi-autobiographical. from his time as an American soldier and
chaplain's assistant, to post war and early years. It is generally recognized
as Vonnegut's most influential and popular work.
Agatha feels she has to run away to avoid marriage because she doesn't have a choice. She is not allowed to choose who she marries. This shows that in Ancient Greek culture marriages were arranged for the women. They were not given a choice to marry for love. Also, this shows that marriage is something that is expected once a person reaches a certain age.