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Learn about role of African American slaves in American South cotton production and present mechanical methods

Learn about role of African American slaves in American South cotton production and present mechanical methods

Cotton harvesting in the American South.
Encyclopædia Britannica, Inc.
  • Contunico © ZDF Studios GmbH, Mainz; Thumbnail Gary Todd; © Georgios Kollidas/Dreamstime.com
    Overview of the invention of the telephone, with a focus on the work by Alexander Graham Bell.
    How the Telephone Was Invented
    Portrait of Alexander Graham Bell with an early telephone device positioned in front of him, symbolizing the first telephone call in history.
  • Contunico © ZDF Studios GmbH, Mainz
    How do the waxy coating on some fruits helps them survive different climates?
    How Fruits Adapt to Different Climates and Conditions
    Bunch of purple grapes.
  • NASA/Dryden Research Aircraft Movie Collection
    A U.S. Air Force KC-135A Stratotanker taking off during a test of experimental winglets, mid-1970s.
    KC-135A Stratotanker winglet test flight
    U.S. Air Force KC-135A Stratotanker taking off during a winglet test flight.