What year was the "Gettysburg Address" delivered?

The "Gettysburg Address" was delivered by President Abraham Lincoln on November 19, 1863, during the dedication of the Soldiers' National Cemetery in Gettysburg, Pennsylvania. This speech is historically significant as it articulated the principles of human equality and the importance of preserving the Union during the Civil War. The timing in 1863 was critical, as it followed the pivotal Battle of Gettysburg, which was a turning point in the war. This context highlights the relevance of the address to the events of that era, making 1863 the correct answer. The other options, although they represent notable years in American history, do not correspond to the timeline of Lincoln's iconic address.