Final answer:
The Gettysburg Address was delivered by Abraham Lincoln at the dedication of the national cemetery during the American Civil War, on November 19, 1863, in honor of the Union soldiers who fought in the Battle of Gettysburg.
Step-by-step explanation:
The event that was the context for Abraham Lincoln's Gettysburg Address was A. The dedication of a national cemetery during the American Civil War. Several months after the pivotal Battle of Gettysburg, Lincoln delivered this famous speech to honor the fallen Union soldiers and commemorate the site where they fought. It was on November 19, 1863, at the Soldiers' National Cemetery in Gettysburg, Pennsylvania, where Lincoln reflected on the principles of liberty and equality upon which the nation was founded.