(A) ** He removed McDowell from command and replaced him with George McClellan
(B) He withdrew his army and called off the war
(C) He joined the Confederacy
(D) It better trained his troops and made sure McDowell was better prepared
EXPLANATIONS BELOW
Concept note-1: -Lincoln vowed to preserve the Union even if it meant war. He eventually raised an army and navy of nearly three million Northern men to face a Southern army of more than two million soldiers.
Concept note-2: -In 1862, McClellan’s Peninsula Campaign unraveled after the Seven Days Battles, and he also failed to decisively defeat Robert E. Lee’s Confederate Army at the Battle of Antietam. Frustrated by McClellan’s cautious tactics, Lincoln removed him from command.
Concept note-3: -Convinced that McClellan could never defeat Lee, Lincoln notified the general on November 5 of his removal. A few days later, Lincoln named General Ambrose Burnside to be the commander of the Army of the Potomac.
Concept note-4: -After the Union Army defeated the Confederates at the Battle of Antietam in September 1862, Lincoln announced the Emancipation Proclamation and warned that if the war did not end by January 1, 1863, the Emancipation would go into effect and the Union would move to destroy slavery in the rebel states forever.