Answer:
The cotton gin
Explanation:
Because since farmers needed to grow more cotton, they used more slave labor.
<u><em>Please GIVE brainlest!</em></u>
<em>Have a good day,</em>
<u><em>johannelbekian</em></u>
If you don't have a human capital, then you can't have foreign investment. It's like light without dark, you can't have one without the other.
Cash money would lose integrity if no gold was there to represent and backup our currency value.