For 10 points, name this practice protested against in the U.S. by Elijah Lovejoy, William Lloyd Garrison, and Frederick Douglass that was prohibited by the 13th Amendment.
This practice was outlawed in Korea during the Gabo reform of 1894. Nicholas V condoned it by issuing the Dum Diversas, but Paul III restricted its practice to non-Christians in the Sublimus Dei. Prohibited by Article IV of the European Convention on Human Rights, Peter Martin led the movement against it in Canada, forty years before a certain act of 1833 prohibited it in Great Britain, twenty-six years after a similar bill was advanced by William Wilberforce. For 10 points, name this practice protested against in the U.S. by Elijah Lovejoy, William Lloyd Garrison, and Frederick Douglass that was prohibited by the 13th Amendment.
This practice was outlawed in Korea during the Gabo reform of 1894.
{slavery}