Final Answer:
The conflict referred to in the excerpt from the Gettysburg Address is most directly contributed to by the Civil War, a deeply divisive conflict fought in the United States from 1861 to 1865. Option A is the answer.
Step-by-step explanation:
The excerpt is from Abraham Lincoln's Gettysburg Address, delivered in November 1863 during the American Civil War. The conflict was primarily fought between the Northern states (Union) and the Southern states (Confederacy) over issues such as slavery, states' rights, and the preservation of the Union.
Lincoln's words are a reflection on the sacrifices made by those who fought in the Civil War and a call to ensure that their deaths contribute to a lasting and meaningful outcome—a new birth of freedom and a commitment to a government of the people. The excerpt encapsulates the context of the Civil War and Lincoln's vision for the nation's future.
Option A is the answer.