Answer:
Yes.
Explanation:
Yes, the speech of president Lincoln in 1863 helps to increase the morale of the union army because the speech was very impressive. After the speech, the soldiers of union army fought with more aggressively than earlier which indicates that this increase in the morale of the union army is due to the speech of president Lincoln so we can conclude that the morale of the union army increases with the speech of the President Lincoln.
