Which of these was not a key difference between Northern and Southern states at the Constitutional Convention? Wanting to protect states’ interests vs. a government with strict rules
Having more, larger cities vs. having fewer, smaller cities
Wanting to protect agriculture vs. protect industries
Having many enslaved people vs. using less enslaved labor

having more,larger cities vs having fewer, smaller cities

Explanation:

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.