Mississippi ratified the amendment in 1995, but because the state never officially notified the US Archivist, the ratification is not official.
New Mexico abolished slavery in 1821
Illinois was the first state to ratify the 13th Amendment
The one amendment that was ratified in a different way than the others was the Twenty-first Amendment. It was ratified using a state ratifying convention.
Oregon
The Thirteenth Amendment ended slavery in the United States.
It was ratified by state conventions rather than by state legislatures.A+:)
The last state to end slavery was Texas. Another answer: Texas was the last Confederate state to end slavery: June 19, 1865, Juneteen It did not end in the entire United States until December 18, 1865. At that point the Secretary of State declared the 13th amendment ratified. It ended in the four border states: Delaware, Maryland, Kentucky, and Missouri.
amendment 21
ratified by state legislatures or state conventions.
tennessee
Albert Roberts