The correct answer to this open question is the following.
Unfortunately, you forgot to specify to what address you are referring. Abraham Lincoln delivered too many speeches throughout his political career.
What was the speech? Where is it?
However, trying to help you, we are going to assume you are referring to the Gettysburg Address. If that is the case, then we can comment on the following.
Abraham Lincoln’s intended audience was the American people, including the people who lived in the southern territories. President Lincoln was calling people to unite again, despite their differences.
Lincoln structured his speech chronologically speaking about the past present and future.
During his "Gettysburg Address," President Abraham Lincoln makes a recount since the signing of the Declaration of Independence to actual events. Indeed, he began his speech by saying "Fourscore and seven years ago..." and then he refers to the founding father's creation of the new United States, a country of freedom, rights, and liberties. The speech was delivered on November 19, 1863, next to the battlegrounds of Gettysburg, one of the bloodiest battles of the Civil War.
The speech was so short, simple, but powerful.