Gettysburg-"Turning point"of the Civil War?

[HerbS]

What gives Gettysburg the "awe" to be referred to as"The Turning Point" of the Civil War?Did Lincoln's Emancipation Proclamation help that reputation? Was it because it was the "High Water Mark"of the Confederacy?Did it"Jump Start"Lincoln's popularity?Could the Confederacy have won?---Last week there was an article,that claimed that Lee had very poor military intellegence and that helped lead to his defeat!---Ideas?