You didn't give the options for techniques, but I will explain to you what rhythm in a poem is.
Simply put, rhythm can be defined as the beat and velocity of a poem. Rhythm is created by a continuous pattern of 'stressed and unstressed' syllables in a line or verse of your poem. Rhythm can help to strengthen the application of words and ideas in a poem.
Hawthorne's best known novel is 'The Scarlet Letter.' The Scarlet Letter was made in 1850.
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