Which idea does Lincoln emphasize through the use of parallel structure?

Abraham Lincoln often employs parallel structure to emphasize the principles of equality and unity in his speeches, particularly in the Gettysburg Address. By using this technique, he reinforces the idea that all men are created equal and that the sacrifices made during the Civil War were for the preservation of a unified nation. This repetition not only enhances the rhythm of his speech but also drives home the importance of democratic ideals and the collective responsibility to ensure liberty for all.