Answer:
The Emancipation Proclamation made the abolition of slavery one of the primary goals of the Union in the Civil War. Prior to this, the Union had primarily focused on preserving the United States as a single country. The proclamation declared that all slaves in Confederate territory were to be freed, which shifted the focus of the war and garnered support for the Union cause from abolitionists and other anti-slavery advocates.
Step-by-step explanation: