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18: THEME

19: The plot usually begins with an exposition that introduces the setting, the characters, and the basic situation. This is introduced and developed. The conflict then increases by the addition of complications, rising action, until it reaches a high point of interest or suspense, the climax.

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eli whitney was an american inventor best known for inventing the cotton gin. this was one of the key inventions of the industrial revolution and shaped the economy of the antebellum south.

i think its d, but grammarly says none

explanation: