The main battle occurred after Lincoln took office, sure. But the siege? Union attempts to resupply and reinforce the garrison were repulsed on January 9, 186

The main battle occurred after Lincoln took office, sure. But the siege? Union attempts to resupply and reinforce the garrison were repulsed on January 9, 1861 when the first shots of the war, fired by cadets from the Citadel, prevented the steamer Star of the West, hired to transport troops and supplies to Fort Sumter, from completing the task.[1] As far as I can see, the war was started by the South almost 3 months before Lincoln took office. [1]: https://en.wikipedia.org/wiki/Fort_Sumter#Civil_War https://en.wikipedia.org/wiki/Fort_Sumter#Civil_War