he correct answer to this open question is the following.
1) How many workers were required to operate a basic cotton gin on a plantation and what were they needed for?
Answer:
Just one worker. Yes, it could sound strange, but the first cotton gin machines could be operated by just one worker.
2) How would the invention of the cotton gin affect the demand for slaves?
Answer:
With the cotton gin invention, the demand for slaves increased because was relatively easy to use it and landlords demanded the purchase of more slaves to operate the machines and increase de production of crops to trade, and that was exported to Europe.
The cotton gin machine was invited in 1793 by American inventor Eli Whitney.