How was war strategy involved in Abraham Lincoln’s decision to issue the Emancipation Proclamation? A)The proclamation acted as the official declaration of war of the Union against the Confederacy.

B)The proclamation outlined the concessions Lincoln was offering to the South for an end to the war.

C)Lincoln’s speech announced the victory at Gettysburg and encouraged foreign nations to join the Union’s cause.

D)The proclamation officially placed slavery at the forefront of the Civil War, thereby discouraging foreign nations from supporting the Confederacy.