Final answer:
Carl Sandburg uses an extended simile in the poem "Chicago."
Step-by-step explanation:
In the following lines (34-35) of his poem "Chicago," Carl Sandburg uses an extended simile. An extended simile is an extended comparison of unlike objects using "like" or "as." In this case, Sandburg compares the laughter of the people in Chicago to the laughter of an ignorant fighter who has never lost a battle.
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