Answer:
Commander in Chief of the Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States
Explanation:
The president can declare war because he is the leader of the nation. He has full contact with any of the other nations leaders. If he feels like he needs war, then he needs war.
I'm pretty sure the correct answer is C. coffee and sugar.
Ultimately Lincoln was referring to the heavy task of forming a more perfect union, which the soldiers on the battle field had so valiantly fought for. Lincoln knew there was still much work to be done.