Civil war

The civil war also referred to as the War Between the States and
started in 1861to 1865.  The civil war was one of the deadliest wars
in American history.
Abraham Lincoln was the president at the time. During his presidential
campaign, he emphasized on abolishing slavery and keeping the union.So
after his victory the southern slave states stated their decision on
seceding from United States and formed the Confederate States of
America. On the other hand, the north or Union desired to keep the
Union, not to end slavery. That was how the war started between the
union and the southern states.

After four years of war, the north claimed the victory and that was
the end of slavery and confederacy in the United States.