The number of people enslaved in different parts of the South varied due to a combination of factors. Some regions had more fertile land and a longer growing season, which made them more suitable for cash crop agriculture. This led to a higher demand for labor, which was met through the enslavement of Africans. Other factors included the presence of large ports for importing enslaved people, as well as the availability of transportation infrastructure for moving enslaved people to different parts of the region. Additionally, the cultural and social attitudes towards slavery varied among different regions, with some areas being more accepting of the practice than others.