It would be George Washington
Defend until the North gave up--essentially the South believed they had more conviction than the North and that would win out.
The South had an idea to fight for and believed they could survive on their own. The South relied on their ports and did not have as many supplies as the North but they had something to fight for. The North lacked morale and a mission. It was also believed by some that the South had the right to leave and the North had no right to stop them through military action.
<span>Assuming that this is referring to the same list of options that was posted before with this question, the best option would be that the US waited for approval from world leaders before retaliating, since instead the US took a unilateral approach. </span>
That would be H(o) Chi Minh, though I believe he had a few other names.