“Juneteenth holiday that commemorates the end of slavery in the country....”
The facts may be too long to put in a post on this site.
June 19th 1865 is supposed to be the date that people in Galveston Texas learned about the Emancipation Proclamation.
Slavery was not legally ended until the ratification of the 13th Amendment in December 1865.
The Emancipation Proclamation freed slaves in areas that were in Rebellion against the United States. It did not free slaves in border states which remained in the Union but still had slaves.
But in popular usage this date is said to be the date slavery ended. That is not historically accurate but this is how people are talking about it.
Like Kwanzaa, another phony black “holiday”.