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An allusion is a type of writing that makes a reference to a person, place or event, it can be real or imaginary, it depends.
Allegories are like metaphors, they bring hidden meanings in figures, actions, imagery, or events, which creates a moral or spiritual meaning the author tries to show.
I don't know if this helped in any way, but I hope it helped a little.
Answer:
if you are in university pls make it by yourself teachers can find it by using a site for essays and letters they can easily find brainily also they can check