what was practical effect of emancipation in united states
By Robert McNamara. The Emancipation Proclamation was a document signed into law by President Abraham Lincoln on January 1, 1863 freeing the slaves then held in the states in rebellion to the United States.nd as a practical matter, the slaves in the Confederacy were not free until the Union Army took possession of a region. The Emancipation Proclamation was issued as part of the presidentâs role as commander-in-chief during wartime, and was not a law in the sense of being passed by the U.S. Congress.