Answer:The Emancipation Proclamation was a wartime measure, one which only applied to those states that had seceded from the Union. For Lincoln, it was motivated by a combination of moral and pragmatic factors.
First of all, remember that Lincoln was morally opposed to slavery, a factor which has to be recognized as contributing to his decision to issue the Emancipation Proclamation. At the same time, practically speaking, it had the result of galvanizing support among abolitionists by introducing a new moral dynamic into the war effort, transforming the struggle into one against the institution of slavery. In this respect, the moral and pragmatic dimensions go hand-in-hand.
Explanation:However, the Emancipation Proclamation had a diplomatic purpose as well, aiming to isolate the rebellious Southern states from attaining allies in Europe. Remember, during the Civil War, the Confederate States hoped to draw support from Britain. However, these hopes were complicated by the Confederacy's support of and reliance on slavery, given the British Empire's opposition to slavery. Thus, the Emancipation Proclamation was, at least in part, also aimed towards the British: by transforming the Civil War into a struggle against slavery, Lincoln ensured that Britain would not side with the Confederacy, keeping the Southern states diplomatically isolated throughout the struggle.
These intentions were realized, as the Emancipation Proclamation is rightly regarded as one of the critical turning points of the Civil War and an important moment in American History.