What discovery led to George B. McClellan's victory over Robert E. Lee at Antietam?

(1 point)
Responses

General McClellan found the Confederate troop roster.
General McClellan found the Confederate troop roster.

General McClellan found General Lee's battle plan.
General McClellan found General Lee's battle plan.

President Lincoln uncovered the South's European alliance.
President Lincoln uncovered the South's European alliance.

Union troops studied Confederate fighting tactics.

1 answer

The correct response is:

General McClellan found General Lee's battle plan.

This discovery provided McClellan with valuable intelligence about Lee's movements and allowed him to effectively respond to the Confederate forces at the Battle of Antietam.