What new political weapon was important in kennedy defeat nixon in 1960?

The approval of is the states was needed to ratify the constitution

The second continental congress: a. made provisions for a continental army with george washington as commander-in-chief b. adopted a “declaration of causes of necessity of taking up arms” c. endorsed the olive branch petition d. all of the above

Was the civil war inevitable? could anything have been done through compromise to stop it, or did it have to happen?