Answer:
D- Ulysses Grant
Step-by-step explanation:
In March 1864, President Lincoln appointed Ulysses S. Grant as General-in-Chief of the Union Army, giving him overall command of all Union armies fighting in the Civil War. Lincoln chose Grant because of his aggressive tactics and his ability to lead and coordinate large armies. Grant had already achieved significant victories in the western theater of the war and was known for his determination and perseverance. Lincoln believed that Grant could bring the war to a close and end the Confederacy's rebellion. Grant went on to implement a strategy of total war, which helped bring about the eventual Union victory in 1865.