What was the effect of the Emancipation Proclamation during the Civil War?

• A. It immediately freed all enslaved people in the United States
• B. It declared enslaved people in Confederate-held territory to be free and shifted the war's purpose toward abolition
• C. It abolished slavery nationwide
• D. It granted voting rights to former slaves

Answer: (B)

The key idea being tested is how the Emancipation Proclamation changed the purpose and scope of the Civil War. It declared that enslaved people in Confederate-held territory were free, and this reframed the war as a fight not only to preserve the Union but also to abolish slavery. This shift gave the conflict a moral dimension tied to emancipation and allowed Black soldiers to join the Union Army, strengthening the North both morally and militarily. It didn’t free everyone nationwide or abolish slavery everywhere at once; it applied only to areas in rebellion, and abolition nationwide would come later with the Thirteenth Amendment.