Je t'aide pour la première partie (feuille jointe)
In November 1860 Abraham (tu mets la suite ici), and two months later, South Carolina seceded from the Union.
To form the Confederacy, another southern states joined South Carolina in January and Febrary 1861. Two months later, the Confederates attack Fort Sumter to start the war.
In May 1862 "Stonewall" Jackson, The Confederate general, defeats Unionists in Shenandoah Valley.
In September 1862, it's The bloody Battle of Antietam in which the Unionists defeat General Robert E. Lee's Confederate. In the same month, Lincoln declares all slaves are free and four month later, his emancipation Proclamation is enacted.
Par contre, je suis pas vraiment sûre pour "The bloody Battle of Antietam in which the Unionists defeat General Robert E. Lee's Confederate". C'est le verbe defeat qui m'a perturbé.