What did the Emancipation Proclamation do?

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A. freed African American slaves in the Union states
B. freed African American slaves in the Confederate states
C. freed African American slaves in both the Union and Confederacy
D. freed African American slaves in Confederate states captured by the Union

D. freed African American slaves in Confederate states captured by the Union.

The Emancipation Proclamation, issued by President Abraham Lincoln in 1862, did option D. It declared that African American slaves in Confederate states captured by the Union would be considered free.