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nothing
The Proclamation did not free the slaves in Missouri, Kentucky, Maryland and Delaware. Also, it was only a Proclamation, not an amendment.
that they were freed from slavery
The very first emancipation proclamation said that all slaves in the Confederate States of America are free, which had no effect on slaves from Virginia because it was part of the Confederacy.
because emancipation proclamation granted them thoses rights
The Emancipation Proclamation issued by Abraham Lincoln in 1862, which would go into effect on January 1, 1863.
No, the Emancipation Proclamation did not free all the enslaved persons. Only the slaves in the "rebellious states" were freed by the Emancipation Proclamation. The "rebellious states" were those which had seceded from the Union, except for the states that had already come under Northern control.
Absolutely nothing. They were excluded.
No. The Emancipation Proclamation, written by Abraham Lincoln, declared all slaves in the CONFEDERATE states free. This did no good because the confederate states were not in Lincoln's control at the time. This document said nothing about the UNION slaves, though. A couple of the states fighting on Lincoln's side still had slaves, and the emancipation proclamation did not set them free.
January 1, 1863.
That document signed by Abraham Lincoln is the Emancipation Proclamation.
Your question is unclear, but I will answer it to the best of my ability. If your talking about during the Civil War, it is because Lincoln wanted to preserve the Union. He would have enslaved every single African American if it meant preserving the union. The Proclamation he made only freed black men in the seceded states, in which he had no power to do so. He did not ban slavery in border states like Maryland because he needed them. Maryland was close to Richmond, the Confederate capital.