Statistics for occurrence #1 of “Fort Sumter” in year 1861, month January of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

... Fort Sumter
The evidences of a purpose on the part of the secessionists to seize upon the public property and usurp the Governmen...
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† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.