investigate which industrial-era trend or innovation you consider to have most profoundly affected warfare during the 1800s and the first decade of the 1900s.

If industrial-era technology began to influence Western warfare soon after 1800, what is it about the U.S. Civil War and the Franco-Prussian War that causes most
historians to refer to them as the world’s first “industrial wars”?

In this case you investigate how the cotton gin led to the civil war.
Post an annotation that addresses how you consider cotton gin to have most profoundly affected warfare during the 1800s.

Civil War History: How the Cotton Gin Contributed to the Civil War

http://www.civilwar.org/resources/civil-war-history-how-the.htm