(A) ** 13th Amendment.
(B) 14th Amendment.
(C) 15th Amendment.
(D) Emancipation Proclamation.
EXPLANATIONS BELOW
Concept note-1: -Passed by Congress on January 31, 1865, and ratified on December 6, 1865, the 13th Amendment abolished slavery in the United States.
Concept note-2: -With the ratification of the Thirteenth Amendment, four million African Americans-almost a third of the population of the South-became permanently free and slavery was abolished in the United States: Section 1.
Concept note-3: -The Thirteenth Amendment to the U.S. Constitution is recognized by many as the formal abolition of slavery in the United States. However, it only ended chattel slavery – slavery in which an individual is considered the personal property of another.
Concept note-4: -A new chapter in American history opened as the Thirteenth Amendment, passed in January of 1865, was implemented. It abolished slavery in the United States, and now, with the end of the war, four million African Americans were free.
Concept note-5: -The 13th Amendment was necessary because the Emancipation Proclamation, issued by President Abraham Lincoln in January of 1863, did not end slavery entirely; those ensllaved in border states had not been freed.