What was one economic difference that caused sectionalism?
a. the south’s economy was based on foreign trade.
b. the south’s economy relied heavily on slave labor.
c. the north’s economy struggled because of a lack of roads.
d. the north’s economy was primarily agricultural.

The correct answer is B. The South's economy relied heavily on slave labor.

Explanation

Before the American civil war in the nineteenth century, the situation of the country was problematic due to the deep division that there was between the states of the north and the states of the south. While in the northern part the economy was based mainly on industry and there was no slave regime, in the south the economy was centered solely on agriculture and in which there was a definite pattern of slavery. This situation added to the growing territorial expansion of the country and constant uncertainty about the future caused the northern and southern society sectionalism. So, the correct answer is B. The South's economy relied heavily on slave labor.

The correct answer is B) The South’s economy relied heavily on slave labor.

0ne economic difference that caused sectionalism was "The South’s economy relied heavily on slave labor."

This is true. The southern states depended so much on slaves to work in the larger southern plantations that produced cash crops to trade and export to Europe. That was one reason southern¿whites did not accept abolitionism. While the northern states invested in the developing of industries, the south remained dependant on agriculture. And this marked a great difference between northerners and southerners.

i believe it d) heterogeneous

islam spread slowly through much of africa through trade and preaching.