Final answer:
President Abraham Lincoln used 1) persuasive language in the Gettysburg Address, invoking the Founding Fathers, and appealing to the ideals of unity and democracy to persuade his audience.
Step-by-step explanation:
The question asks about the method President Abraham Lincoln used to persuade people in his Gettysburg Address. One effective way Lincoln tried to get people to agree with him was by using persuasive language. In his speech, Lincoln eloquently reminded the audience of the fundamental principles of the nation, articulated in the Declaration of Independence, such as equality for all.
Lincoln's use of rhetorical strategies such as invoking the Founding Fathers, the American Revolution, and the notion of 'government of the people, by the people, for the people' were intended to foster a sense of unity and shared purpose in the aftermath of the Civil War. Moreover, his appeals to the 'better angels of our nature' aimed to reconcile and heal a nation divided by war.