What did Eli Whitney invent in 1793?

What did Eli Whitney invent in 1793? Correct Answer Cotton gin

Cotton gin, machine for cleaning cotton of its seeds, invented in the United States by Eli Whitney in 1793. The cotton gin is an example of an invention directly called forth by an immediate demand; the mechanization of spinning in England had created a greatly expanded market for American cotton, whose production was inhibited by the slowness of manual removal of the seeds from the raw fiber. The simplicity of the invention that could be powered by man, animal, or water caused it to be widely copied despite Whitney’s patent, it is credited with fixing cotton cultivation, virtually to the exclusion of other crops, in the U.S. South and so institutionalizing slavery.