Serfdom, was found throughout Europe, since before Roman times and amounts to enslavement. In Britain, serfdom ended by the 1400s, and is why terms like "Lord" are still found in the English language: like landlord and tenancy. Even political boundaries of voting districts in Britain now, can be traced back to what the elite had and what their subjects had.
As the Roman Catholic Church lost its control during the early modern period (1300 to 1600) and the Rennaisance and the Reformation gained strength, serfdom waned in Western Europe. Serfdom survived in Europe into the modern era and finally ended in 1863 when the last of Russia's serfs were "freed" by the Czar. And the Russian Serfs didn't move on: they were key to the Russian Revolution.
AS to how early chattel slavery ending and where, parts of the United States had ended slavery within 20 years of the revolution: i.e. New England. But that does not mean "the US was among the first to end slavery" - Candace Owens is doing a sleight of hand to do her duty to Ol' Massa on that one.
Spanish Speaking South America ended slavery during their wars for independence. Of course, the effect of the Haitian Revolution is immeasurable. The fact is - if you want to accept it or not - Linclon's Emancipation Proclamation of 1863 and the defact0 status until Juneteenth, 1865 means that in the Western Hemisphere, the United States was next to last to end Slavery, with Brazil being the last: 1883.