The correct answer to this open question is the following.
Although you forgot to attach the options for this question, we can say the following.
Lincoln uses repetition in this sentence to emphasize the idea that "ultimate sacrifice given by the soldiers on this ground."
When United States President Abraham Lincoln repeated the parallel construction he tried to emphasize the ultimate sacrifice given by the Union soldiers and Confederate soldiers on that ground of Gettysburg, Pennsylvania.
This sentence is part of the famous Gettysburg address delivered by him on November 19, 1863. Previously to that above-mentioned line, Lincoln had said the following: <em>"We are met on a great battlefield of that war. We have come to dedicate a portion of that field as a final resting place for those who here gave their lives that that nation might live."</em>
This can serve us to understand the whole idea of the excerpt.
