Final answer:
The Battle of Gettysburg was the last major attack by Confederate forces in the North during the Civil War.
Step-by-step explanation:
The last major attack by Confederate forces into the North during the Civil War was the Battle of Gettysburg. This battle took place from July 1 to July 3, 1863, in Gettysburg, Pennsylvania. It was a turning point in the war, as the Union was able to repel the Confederate forces and secure a crucial victory. The high casualties suffered by the Confederates further weakened their ability to mount another major offensive into the North.
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