PLUS will put Brainliest

The 3-day battle considered by many to be a turning point in the war because it crippled the Confederate Army bad enough that they would never again be able to invade a northern state:

A. The victory at Gettysburg.

B. The Battle of Antietam.

C. The taking of Atlanta by Sherman

D. The siege of Vicksburg by Grant.

16) All of the following were some of “Lincoln’s Problems” EXCEPT:

A. Justification of War

B. Slavery existing in the US

C. Most of the Northern states wanted to secede from the Union.

D. Difficulties with Union Generals