One of the MAIN economic reasons that the Upper South seceded after the Lower South was that?

One of the main economic reasons the Upper South seceded after the Lower South was the fear of losing their economic interests tied to slavery and cotton production. As the conflict over slavery intensified, Upper South states recognized the potential threat to their agricultural economy and the profits derived from slave labor. Additionally, the Upper South relied on the Lower South's cotton economy; their secession was motivated by the desire to protect their own economic stability and political power within a slaveholding Confederacy.