Which type of appeal does president Lincoln use in this excerpt?

To determine the type of appeal President Lincoln uses in the excerpt, one would need to analyze the specific language and themes present in the text. Common appeals in Lincoln's speeches include ethos (credibility), pathos (emotional appeal), and logos (logical reasoning). For example, if he evokes strong emotions related to unity or sacrifice, then he is using pathos. If he references the founding principles of the nation, he is likely utilizing ethos.