The correct option is: "Most crops were tended with slave labor."
Of the 8,289,782 free people who lived in the 15 slave states, 393,967 people (4.8%) had slaves, which means that the average owner had about ten slaves. Most slaves were owned by plantation owners, who are defined by historians as those who had twenty or more slaves. Ninety-five percent of the black people lived in the South, representing a third of the population of that region, by comparison in the North zone the black people only represented 2% of its population. The work of the slaves was an important factor in the accumulation of wealth in the United States in the first half of the 19th century.
