Answer: Cotton gin
The cotton gin was a device, whose invention is attributed to Eli Whitney, who patented it in 1794.
The principle of operation of this machine is based on the quick and easy separation of the cotton fibers from their seeds, using a screen and small wire hooks that push the cotton through it, while some brushes eliminate the cotton threads that are released continuously, in order to avoid entanglements .
This invention was an important asset for the American economy of the time, since it could satisfy the growing demand for raw cotton that existed in the population.