What do most modern historians believe was the underlying cause of the breakup of the Union?

Question

Quizplus · Accepted Answer

Most modern historians believe that the underlying cause of the breakup of the Union was the ideological differences over the morality and utility of slavery. The North and the South had vastly different visions for the future of the country, with the South relying heavily on slave labor and the North becoming increasingly opposed to the practice. This led to tensions and ultimately, secession and the Civil War.

What Do Most Modern Historians Believe Was the Underlying Cause