Four year colleges require high school students to complete four years of English.
The pattern of end rhymes I presume.
The revealed by the phrase " they had no confidant" in Ovid's poem is peaceful and relaxing.
The lines from the excerpt of
Edgar Allan Poe’s "The Raven" that uses allusion are:
2. Leave no black plume as a
token of that lie thy soul hath spoken!
4. And the Raven, never
flitting, still is sitting, still is sitting
6.And my soul from out that shadow that lies floating on the floor
