Read how an invention made it possible to increase the amount of cotton available for export, thus leading to an increase in the number of acres planted in cotton, and resulting in the need for more and more slaves. Before the invention...

But for the invention of the cotton gin, slavery perhaps would have died out in the United States in the early 19th century. Read about why technological advances caused the spread of slavery in the South and read about how slaves clung...

This resource covers the changing of America due to the Industrial Revolution which brought in not only new technology but also opened the door to reform movements. From the series by Joy Hakim, "A History of Us." Includes a teacher's...