Statistics for occurrence #1 of “Pennsylvania” in chapter 13 of Admiral David D. Porter, The Naval History of the Civil War.:
...Southern States seceded, would doubtless have been carried out had it not been for the multitude of men in the North who sprang to arms and frustrated the Confederate plans.
Lee had to retreat from Pennsylvania , where it was determined that the Confederates should endure all the hardships of war to teach them the folly of rebellion.
To circumvent the grand schemes of the enemy in the West, it was necess...
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