1. Abraham inaugurated.

This led to session of the southern states. They believed an anti slavery president being elected was a direct threat to their way life...this was the first match being thrown in the fire

2. Antietam.

This event had more casualties than all of the American wars combined. Reality check of the horrible reality they now lived in and brought upon themselves. George McCellan won and Robert lee retreated to Virginia.

3. Battle of Gettysburg.

This battle had upsides for the Union. However by the end of this battle both sides suffered losses more than they could have ever imagined. A short glorious war had turned into a long bloody war.t

3 Top Events