Merchants believed that the slaves were less than animals, therefore they needed less than animal conditions.
South Carolina was placed under military control because Abraham Lincoln believed that reconstruction of the South, after the Civil War was done, needed to be merciful to heal the country. The Reconstruction Act of 1867 placed Southern countries under military rule.
The cultural impact of the British mercantile system is that it led to cultural exchange through trade with the rest of the world which made other cultures acceptable. It made America a melting pot whereby various cultures were accepted including the right of religious freedom
It would be Trade, children