How did the arrival of Union reinforcements affect the outcome of the battle of Gettysburg? The Union was able to avoid more cas
ualties. The Union was able to hold the line and eventually win. The Confederacy surrendered immediately. The Confederacy had to take a defensive position.
The right answer for the question that is being asked and shown above is that: "<span>The Confederacy surrendered immediately. " </span>the arrival of Union reinforcements affect the outcome of the battle of Gettysburg is that <span>The Confederacy surrendered immediately. </span>