How does Poe use repetition in the poem annabel lee?

In "Annabel Lee," Poe uses repetition to emphasize the strong emotions and deep connection between the speaker and Annabel Lee. The repeated phrases, like "kingdom by the sea" and "the angels, not half so happy in heaven," create a sense of longing and loss, underscoring the speaker's grief over the death of his beloved. This repetition serves to highlight the eternal love that transcends death in the poem.