Final answer:
The American Civil War is the conflict in which the use of slave labor in agriculture was a significant issue, due to the South's dependence on slavery for its agricultural economy.
Step-by-step explanation:
The Use of Slave Labor in Agriculture During the American Civil War
In the context of the question about the war or conflict where the use of slave labor in agriculture was a significant issue, the correct answer is d) American Civil War. The Southern economy was heavily dependent on agricultural production, including crops like cotton, tobacco, and rice, which necessitated a large and cheap labor force that slavery provided. The institution of slavery was a major factor that differentiated the economies of the North and South, eventually contributing to the outbreak of the Civil War. Slavery in the United States was a system fueled by the exploitation of African slaves who were forcibly brought to the country and deprived of their freedom to benefit the economic interests of plantation owners. It was eventually eradicated following the end of the Civil War in 1865.