Final answer:
Poe uses hyperbole to emphasize the intensity and rarity of the speaker's love for Annabel Lee.
Step-by-step explanation:
In this stanza, Poe uses hyperbole to develop the theme of the speaker's intense and rare love for Annabel Lee. The line 'But we loved with a love that was more than love' is a hyperbolic statement, exaggerating the depth and intensity of their love beyond typical measures.
This hyperbole highlights the extraordinary nature of their relationship and emphasizes how special and unique their love was.