Why was the Battle of Gettysburg unusual compared to other battles in the east? Check all of the boxes that apply.

The Battle of Gettysburg was a major defeat for Robert E. Lee and the Confederacy. It was also fought during Lee’s invasion of the Union, rather than while he was defending Confederate territory. Therefore, the correct choices are “Lee suffered a major defeat” and “Lee was invading the Union.”

AI-written and checked against the verified answer.