How inventions change history (for better and for worse) - Kenneth C. Davis

by: TED-Ed     Published on: 17 October 2012

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View full lesson: in 1793, the cotton gin changed history for good and bad. By allowing one field hand to do the work of 10, it powered a new industry that brought wealth and power to the American South -- but, tragically, it also multiplied and prolonged the use of slave labor. Kenneth C. Davis lauds innovation, while warning us of unintended consequences.Lesson by Kenneth C. Davis, animation by Sunni Brown.