June 14 1866.
WHEN DID SLAVERY REALLY END IN THE UNITED STA
"As it turns out, neither document applied to Indian Territory, and consequently, slavery survived in that part of the United States for several months after it was abolished everywhere else with the ratification of the Thirteenth Amendment in December, 1865."
"If we simply go by the dates on which the Tribes ratified these treaties, slavery in the continental United States came to an end as a legal institution on June 14, 1866, when the Creek Tribe agreed to abandon African-American slavery."
https://law.marquette.edu/facultyblo...mber%2C%201865.
Don't be a sap. Know your facts.