Describe the contributions slaves made to the economy of south carolina

In fact, these Carolina rice fields have been described as charnel houses for African-American slaves. Malaria and enteric diseases killed off the low country slaves at rates which are today almost unbelievable. Based on the best plantation accounts it is clear that while about one out of every three slave children on the cotton plantations died before reaching the age of 16, nearly two out of every three African-American children on rice plantations failed to reach their sixteenth birthday and over a third of all slave children died before their first birthday. Rice's macabre record of slave deaths has been traced to two primary factors - one was malaria, the other was the infants' feebleness at birth, probably the result of the mothers' own chronic malaria and their general exhaustion from rice cultivation during pregnancy.

Site:

https://www.sciway.net/hist/chicora/slavery18-2.html

the answer is the ku klux klan