The Last Battle of the civil War

Let me ask these questions.
when was slavery in the north ended and when was it ended in the south.
and what was the name of the document that ended slavery.
also why did the north wish to end slavery.
i think a study of these 3 questions would answer what the war was about.


It in my opinion the south did not take offense to slavery being ended because it was right or wrong.
its also my understanding the southern states were looked down up and 2nd class states.