Why was it important for lincoln to wait to issue the emancipation proclamation

Lincoln realized that the Emancipation Proclamation could give him several advantages over the Confederacy in the war. First, it would give him the chance to recruit former slaves into the Union army. Lincoln also knew that once the war became an antislavery campaign, European nations would not support the Confederacy.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;