In the antebellum South, a lone planter on a planation in south Carolina with 200 slaves would be counted for the purposes of determining congressional representation as how many people?

a. 201 people
b. 121 people
c.1 people
d. 151 people

The correct answer is b. 121 people.

During the antebellum period, the Three-fifths Compromise was in effect, which stated that each enslaved person would be counted as three-fifths of a person for the purposes of determining congressional representation. Therefore, if a planter owned 200 slaves, they would count as 200 * 3/5 = 120 people. Adding the lone planter, the total count would be 120 + 1 = 121 people.