What purpose does this rhetorical device serve in The Republic?

1. How should a member of Augustine’s City of God engage in earthly politics?2. Explain the city-soul analogy given by Socrates.2. What are the “three waves” that Socrates talks about? Pick one wave and explain how Aristotle differs from Plato on that topic.3. What is the Allegory of the Cave? What does each element of the story represent? What purpose does this rhetorical device serve in The Republic?