The victory have been celebrated by the whole team
This probably means that something you had planned to turn out well, ended up going against you. The scenario flipped it's self around and you were so said "betrayed" by your own plan or game.
<span>While he doesn't specifically mention slavery in this excerpt then I would say that the answer would be B) by citing the office to which he was elected as it could be said to be ethos as appealing to people's belief that the president has the right to declare war though the obvious purpose of the war is to fight slavery.</span>