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American Writer, Historian, and Philosopher. Winner of the Pulitzer prize for General Non-Fiction and the Presidential Medal of Freedom. 1885-1981
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1. Speech
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2. Fire
3. Conquest of Animals
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4. Agriculture
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5. Social Organization
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6. Morality
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7. Tools
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8. Science
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9. Education
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10. Writing and Print
Images: Courtesy of Google Images and Ranking: Courtesy of
“The Greatest Minds and Ideas of All Time”
by Will Durant