|After Lincoln's election, many Southern states fearing Republican control in the government, seceded from the Union. Lincoln faced the greatest internal crisis of any U.S. President. After the fall of Ft. Sumter, Lincoln raised an army and decided to fight to save the Union from falling apart. Despite enormous pressures, loss of life, battlefield setbacks, generals who weren't ready to fight, assassination threats, etc..
Lincoln's declaration of freedom for all slaves in the areas of the Confederacy not under Union control. Also, on November 19, 1863, Lincoln gave his famous Gettysburg Address which dedicated the battlefield there to the soldiers who had perished. He called on the living to finish the task the dead soldiers had begun.