7h 40min, feb 12, 1794 y - In 1794, the cotton gin was invented by Eli Whitney in Southern United States *

Description:

Prior to the invention of the cotton gin, the process of moving individual seeds from cotton fibres proved a challenge. However, when the invention was created, the cotton gin greatly improved the removal of seeds from cotton fibre. However, there were patent infringement issues, therefore Little money was made from the invention. Also, the justification given by the cotton gin allowed factory owners to maintain+expand slavery.