Statistics for occurrence #1 of “Fort Sumter” in chapter 14.55 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: The Opening Battles. Volume 1.:

...istration, while the South was arming and organizing with extraordinary activity for the avowed purpose of destroying the Government, which apparently supinely awaited that event. The attack on Fort Sumter broke the spell, after which an almost frantic energy manifested itself at the North in raising troops and in the purchase and armament of vessels to blockade the thousands of miles of Southern coast...
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