Sensory language is the answer I believe
Answer: Like the Roman government, the United States has a tripartite system. The U.S. system of checks and balances makes sure that one branch of the government doesn't have too much power. This system is like the veto, which limited the power of Roman consuls.
Explanation:
He compares the poem to the moon, mainly because of the moon's slow, and gracious movement on the sky. According to the poet, "<span>Leaving, as the moon behind the winter leaves" is the description of how the poem should slowly and carefully flow to the end, just like the moon during a winter night. Poem should be motionless - should capture reader's attention, and entangle him in it completely. </span>