What made the southern colonies unique compared to other New World slave societies?

Question

Quizplus · Accepted Answer

The fact that southern slaves had a high rate of natural increase, meaning that they were able to have children and continue to grow their population without the need for constant importation of new slaves, was unique compared to other New World slave societies. In places like the Caribbean and Brazil, the slave populations were often maintained through constant importation of new slaves as a result of high death rates and low birth rates among the enslaved population.

What Made the Southern Colonies Unique Compared to Other New