Why did President Lincoln issue the Emancipation Proclamation?
A.Because President Lincoln himself was an abolitionist. B.Because he wanted to punish the slave-owners in those states which broke away from the union. C.Because he has no other alternative. D.Because he realized that in order to win the war, he should make it a just war against slavery so as to rally as many people as possible under the banner of the Federal Government.正确答案D