Answer:
anaphora
Rhetorical devices are abundant in the “I Have A Dream” speech. Most noticeable, and frequently used, is anaphora, which our dictionary defines as “the repetition of a word or phrase at the beginning of successive clauses”: Now is the time to make real the promises of democracy.
Explanation:
Well I would say that one of the central themes in Ernest Shackleton's South can be analyzing the complexity of the fight between the individuals and the society along with its "norms", in a world where nature is somewhat relentless towards humans. Hope this helped.