civil war timeline By facebooker_10206957517831812 Period: Mar 1, 1861 to Apr 1, 1865 civil war history of the american civil war Mar 4, 1861 Abraham Lincoln becomes president of the united states Mar 24, 1861 Seven Southern States Secede Apr 24, 1861 South attacks mount sumter starting the civil war Sep 1, 1862 Antietam is the bloodiest battle in the war Jan 24, 1863 Lincoln signs the emancipation proclamation Jul 24, 1863 Lincoln delivers the Gettysburg Address Jul 24, 1863 Lee Surrenders to Grant