"Mr. Davis and Ganl. Beuaregaurd attacking Ft. Sumpter"
Who 'attacked' Fort Sumter first? Major Anderson did. He secretly moved his force into a non-occupied fortifaction under construction and held at bayonet point the U.S. Civilian workers working there. Held them against their will. That's kidnapping by any state law. Not only did he make an aggressive move upon that position he did it without authority and destroyed by fire government stores and property at Fort Moultrie. He was willing to fire upon ships in the harbor and had guns manned and primed, aimed and following the nearest vessals if they should come too close while he carried out his deed. He did this with no recorded known military threat to his command.
Frank I would look at the chronological order in which events occured, and look to when the secession fever was at its highest and when the majority of Southerners took up arms. It was when Lincoln called for the invasion of the South, not the events of Fort Sumter.
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David Upton