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His parents separated soon after his birth, and Hughes was raised mainly by his mother, his grandmother, and a childless couple, the Reeds. He attended public schools in Kansas and Illinois and upon graduating elementary school, Hughes was named class poet, although he had never even written a poem.
Innovation is important to the advancement of society as it solves these kinds of social problems and enhances society's capacity to act. It's responsible for resolving collective problems in a sustainable and efficient way, usually with new technology.
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Explanation:
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It is D: to describe advantages of printed books
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