Final answer:
Abraham Lincoln uses logos in this excerpt by stating facts about the onset of the war.
Step-by-step explanation:
Abraham Lincoln uses logos in this excerpt by stating facts about the onset of the war. He mentions how four years ago, all thoughts were anxiously directed to an impending civil war, and how there were insurgent agents seeking to destroy the Union. By presenting these factual details, Lincoln appeals to reason and logic, providing evidence to support his argument about the need to save the Union.
Learn more about Abraham Lincoln's Second Inaugural Address