Why was the Battle of Gettysburg considered the beginning of the end for the Confederacy?

The Battle of Gettysburg, fought from July 1 to July 3, 1863, marked a crucial turning point in the Civil War as it was the Confederacy's last major invasion of the North. The Union victory, coupled with significant Confederate losses, weakened their military capacity and morale. Following Gettysburg, the South struggled to replenish its troops and resources, while the Union gained momentum, leading to a series of victories that ultimately culminated in the Confederacy's defeat. This battle not only halted Confederate advances but also shifted the war's focus toward Northern victory.