Why was slavery specially comming in the colony of south carolina?

Tobacco was the major cash crop in the Upper South, the original Chesapeake Bay Colonies of Virginia and Maryland, and in parts of the Carolinas.

The later development of cotton and sugar cultivation in the Deep South in the early 18th century also led to the establishment of large plantations which had hundreds of slaves. The great majority of Southern farmers owned no slaves or owned fewer than five slaves. Slaves were much more expensive than land.

In the low country of South Carolina, even before the American Revolution, planters in South Carolina typically owned hundreds of slaves. (In towns and cities, families held slaves to work as household servants). The 19th-century development of the Deep South for cotton cultivation depended on large tracts of land with much more acreage than was typical of the Chesapeake Bay area, and for labor, planters held dozens, or sometimes hundreds, of slaves.