In the early and mid-1800s, sectionalism was strongest
a) in the west, where people felt their way of life depended on agriculture. b) in the west, where people were opposed to the rise of ranching. c) in the north, where people felt other regions saw them as uncivilized. d) in the south, where people felt their economy depended on slavery.

The correct answer is D) In the South, where people felt their economy depended on slavery.

During the early to mid 1800's, the Southern economy became heavily reliant on slave labor thanks to the invention of the cotton gin. This invention by Eli Whitney completely changed American society, as it made the production of cottong much more efficient and profitable. In order to keep up with demand and to increase profits, Southerners relied on slaves to use these machines and to produce cotton. Without slave labor, many felt the Southern economy would be absolutely destroyed.