In the Gettysburg Address how does Lincoln and phases that the United States was founded on the principle of freedom for all people

Lincoln spoke of the greatness of the sacrifice of the men of both North and South in his dedication of the Gettysburg National Cemetery in Pennsylvania. He gave the battle a transcendental sense by transforming the battle into a statement of principle. His Address effectively reinterpreted the Constitution to accurately reflect the Declaration of Independence, that all men are created equal.