How does this document support the idea that Gettysburg was a turning point in the war?

This document highlights key events and strategies from the Battle of Gettysburg, illustrating its significant impact on the Union's morale and military strategy. It emphasizes the substantial losses suffered by the Confederate Army, which weakened their offensive capabilities and shifted the momentum in favor of the Union forces. Additionally, the document may discuss the political ramifications and increased support for the Union cause that emerged from the victory, reinforcing the notion that Gettysburg marked a critical turning point in the Civil War.