Abraham Lincoln's significance to Georgia's history lies in his role as the President of the United States during the American Civil War. As the leader of the Union, Lincoln played a pivotal role in the war's outcome, which had a profound impact on Georgia. His legacy in Georgia includes his leadership in preserving the Union and the abolition of slavery through the Emancipation Proclamation. This marked a turning point in the state's history, as it led to the end of the Confederacy and the eventual reunification of Georgia with the rest of the United States.