Respuesta :

because the south was into slavery but the north wasnt so they introduced them to the south because they wanted more slaves to the south so there could be more labor being done hope this helps 

Answer:

To obtain a more disease-resistant labor force.

Explanation:

Natives from the whole american continent died frequently of diseases that they were familiarized with. They did try to enslave the natives as well, but it didn't go so well because most of them would die from diseases that had never reached that land (such as the flu, chickenpox, STDs).