Slavery Abolition Act 1833
The Slavery Abolition Act 1833 was an 1833 Act of the Parliament of the United Kingdom abolishing slavery throughout the British Empire (with the exceptions "of the Territories in the Possession of the East India Company," the "Island of Ceylon," and "the Island of Saint Helena"; the exceptions were eliminated in 1843).
Thanks for pointing out that important fact of history. Good men prayed and worked diligently for decades to make that into reality. And they did it without a civil war.