As southern farmers adopted the cotton gin, the South’s cotton yield grew exponentially. Other inventions intersected and created the demand to match this output. Steamboats allowed cotton to be easily shipped and new cotton mill technology in England and New England was able to keep up with the improved output. By the Civil War, America grew 3/4th of the world’s cotton. Cotton also made up 3/5ths of America’s total exports. I think that’s the answer
