What was the main problem between the North and the South?

The main problem between the North and the South was the disagreement of slavery.

Explanation:

The North was against slavery, and the South was for slavery. This was the main problem between the North and South because it caused a whole war.

answer; john stuart mill's principle of utility is your answer; /// good luck

sir frederic attributed inaccuracies to schemas. memory reconstruction is one part actual events and one part personal schema, which can result in inaccuracies when memories are reconstructed.