In the year 1860, the enslaved population in the Southern States was about 3.9 million slaves and 8 million white people. This means that almost half of the population was enslaved and that it was working mainly in cotton fields. The Southern States used the enslaved population as a strategy to get more power in the government and to convince other States to secede from the Union. Thus, the right answer is d. It potentially gave the South more power in the government.