On April 12th, Confederate troops began attacking the north ("Yankees"). That was the bloody beginning of the American civil war.
Abraham Lincoln, he restricted his rights and issued a general conscription for the first time, which in turn led to problems and conflicts.
Militarily, the southern states could no longer win the war, they wanted to prevent Abraham Lincoln being re-elected. When the war was over, Abraham Lincoln was re-elected. In the end, the north won the war because of its superior industrial production.