Who invented the cotton gin and what effect did it have on the south and slavery?

the cotton gin, invented by Eli Witney gave southern slave owners a way of producing more cotton and processing it at a faster rate. now being able to do way more work in a shorter time, slave owners now needed more slaves to keep up pace. with cotton being the main export of the south, it was imparitive to keep the money flowing dispite northern opposition. Mr. Witney was truly a great inventor...but who would predict he would have such an impact on our nations darkest time and helping to lead us into a war dividing the nation.