Question

which of the following was not a goal of president jefferson at the start of the civil war?
persuade the north they couldnt win
go on the defensive
hold on the as much territory as possible
blockade southern ports

Explanation:

First, note that President Jefferson Davis (of the Confederacy) at the start of the Civil War: The South aimed to persuade the North they couldn't win, go on the defensive, and hold territory. Blockading Southern ports was a Union (North) strategy, not a Confederate (Jefferson Davis's) goal.

Answer:

Blockade Southern ports