In the devon lincoln-douglas debates, the number one topic was a) state’ rights b) popular sovereignty c) secession d) slavery

Slavery was the main topic of the Lincoln-Douglas so it would be D! Hope this helps! :)

c. have a great day ~ma.tiah

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.