Lincoln 's 1863 Emancipation Proclamation did not apply to the border states. Of the states that were exempted from the proclamation, Maryland (1864), Missouri (1865), Tennessee (1865), and West Virginia (1865) abolished slavery before the war ended. However, Delaware and Kentucky did not abolish slavery until December 1865, when the Thirteenth Amendment was ratified.
when was slavery abolished in the border states
December 1865, when the Thirteenth Amendment was ratified