The B. Cotton Gin was a technological development that led to an increased demand for slaves in the United States during the early - mid 1800's. The cotton gin made it easier to separate seeds from the cotton - making it faster to pick cotton! 4.9 I hope this helps.
Answer:
The cotton gin
Explanation:
It is easy to use and much faster than picking by hand which led to more slaves because the cotton gin makes it easier to separate the cotton from its seeds and more slaves could go outside picking up the cotton.
