•The moral precept – held that slavery was wrong in principle, everywhere without exception. In declaring slavery unjust and immoral, Lincoln based his judgment on the Declaration of Independence, which state, “ . . . all men are created equal.” Thus, slavery violated the most basic principle of the U.S. political order.
•He introduced measures that resulted in the abolition of slavery, issuing his Emancipation Proclamation in 1863 and promoting the passage of the Thirteenth Amendment to the Constitution (Only through a single central government for North and South alike could slavery ended).