Which is a true explanation for why Northern states had fewer enslaved workers?(1 point)

Question

Responses

Hiring day workers in Northern factories was generally less expensive than keeping enslaved workers.
Hiring day workers in Northern factories was generally less expensive than keeping enslaved workers.

All Northerners believed that slavery was wrong.
All Northerners believed that slavery was wrong.

Slavery was only legal in Southern states.

Answer 1

Slavery was only legal in Southern states.