Answer:
Correct answer is A. After the Proclamation, a Union victory meant that Slavery would be ended in the Confederate States.
Step-by-step explanation:
Option A is correct because the Proclamation was to be included in all parts of the country.
B is not correct as England was out of this conflict.
C is not correct as the question of Union was a question raised even before the war started.
D is not correct as Lincoln was supporter of abolitionism since the beginning of his political career.