Gettysburg Address Re-enactment Set

On the Civil War battlefield where President Abraham Lincoln gave a speech that symbolized his presidency and the sacrifices made by Union and Confederate forces, historians and everyday Americans gathered Tuesday to ponder what the Gettysburg Address has meant to the nation. Civil War historian James McPherson and U.S. Interior Secretary Sally Jewell were scheduled to speak to mark the 150th anniversary of speech. Pennsylvania Gov. Tom Corbett also will deliver remarks. It comes near the end of a momentous year for the park, city and college that share the name Gettysburg, as hundreds of thousands of visitors took part in historical re-enactments and ceremonies/ Associated Press . More here. (AP photo of a Lincoln impersonator)

DFO: I heard the Gettysburg Address being read on NPR en route to work this morning. It remains an incredible document.

Question: What has the Gettysburg Address meant to this country?