With ratification, it became the Thirteenth Amendment to the United States Constitution on December 6, 1865.
wɪð ɹˌæɾɪfɪkˈeɪʃən, ɪt bɪkˌeɪm ðə θˈɜːtiːnθ ɐmˈɛndmənt tə ðə juːnˈaɪɾᵻd stˈeɪts kˌɑːnstɪtˈuːʃən ˌɔn dᵻsˈɛmbɚ sˈɪks, wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti fˈaɪv.