(A) ** yes
(B) no
EXPLANATIONS BELOW
Concept note-1: -While the Battle of Antietam was not quite the decisive Union triumph Lincoln hoped for, Lee’s retreat was victory enough for Lincoln to issue the emancipation proclamation on which he had continued to labor since July.
Concept note-2: -Most importantly, Union victory at Antietam provided President Abraham Lincoln the opportunity he had wanted to announce the Emancipation Proclamation, making the Battle of Antietam one of the key turning points of the American Civil War.
Concept note-3: -Union Claims Victory Military historians consider the Battle of Antietam a stalemate. Even so, the Union claimed victory. And keeping Confederates in their southern box enabled President Lincoln to finally release his Emancipation Proclamation on September 22, 1862.
Concept note-4: -The Battle of Antietam can be considered as the bloodiest battle. Even though the Confederates were determined to win, the Union halted any chance of victory. The Unions battle strategy and placement of troops allowed McClellan to secure the victory.