Humanities Homework Help

I have a writing assignment on western civilization. the requirement for this assignment (Read Mitylenian Debate (Thucydides, Book 3, chapters 36-50)  and Melian Dialogue (Thucydides, Book 5, chapters 84-116)  as well as The West in Question 4 (Section 3).  What happens when a democracy tries to be an imperial power?  Are there compromises to be made in how a democracy treats others?) if you have any question just let me know