Freely list a group of topics you are interested in at first, no matter how stupid you might think they are. Just write. After you have filled the page with random and stream of consciousness ideas, only then do you go back and filter them for suitability for the paper. This gives you plenty of choices.
Hope this helps.
Answer:
an additional layer of meaning
Explanation:
An allusion in a poem refers to a person, place, historical event, or ancient source such as the Bible, mythology, ancient poets etc. It refers outside of the poem itself to evoke a mental picture, create an image, and set the poem in a larger context or setting.