Back then the slaves use to pick cotton and seporate the seeds. The cotton gin was used to make it easier to seporate these seeds. This put many people out of business. To learn more about the cottin gin go to http://americanhistory.about.com/od/industrialrev/p/cotton_gin.htm
inside of cotton gin.
The first sewing machine was made in Germany in 1755 by Charles Weisenthal. this made it slightly easier to sew clothes and clothes. You might not see it but it is still commonly used. To learn more about sewin machine go to http://inventors.about.com/od/sstartinventions/a/sewing_machine.htm
One of the first sewing machine.