An allusion is something that is not real look very real.
<span>This invention was helpful because it helped them save work, time and energy. It also made cotton easier to pick and at the same time it let farmers grow more cotton.</span>
They had limited freedom, but they still had freedom, so I would say either the first one or the second one. I'm not completely sure, so i will let you figure that out between those two.
I hope this helped! :)