(A) ** the Union’s effectiveness at the Battle of Antietam.
(B) the death of General Jackson at Chancellorsville.
(C) the nation had voted to decide the issue of slavery.
(D) the capture of Washington, DC, by Confederate forces
EXPLANATIONS BELOW
Concept note-1: -President Abraham Lincoln issued the Emancipation Proclamation on January 1, 1863, as the nation approached its third year of bloody civil war. The proclamation declared “that all persons held as slaves” within the rebellious states “are, and henceforward shall be free."
Concept note-2: -Although the Battle of Antietam resulted in a draw, the Union army was able to drive the Confederates out of Maryland – enough of a “victory, ” that Lincoln felt comfortable issuing the Emancipation just five days later.
Concept note-3: -On September 22, 1862, partly in response to the heavy losses inflicted at the Battle of Antietam, President Abraham Lincoln issued a preliminary Emancipation Proclamation, threatening to free all the enslaved people in the states in rebellion if those states did not return to the Union by January 1, 1863.
Concept note-4: -On September 22, 1862, President Abraham Lincoln issues a preliminary Emancipation Proclamation, which sets a date for the freedom of more than 3 million enslaved in the United States and recasts the Civil War as a fight against slavery.
Concept note-5: -Pres. Abraham Lincoln used the occasion of the Antietam victory to issue his preliminary Emancipation Proclamation (September 22, 1862), announcing that unless the Confederates laid down their arms by January 1, 1863, he would free all slaves not residing in Union-controlled territory.