Question?? Where the question
<span>The Nazi's carefully planned campaign of mass murder.
The Holocaust was planned by the Nazi's to exterminate the Jews in large numbers, as keeping them inside ghetto's did not kill the Jews fast enough.
hope this helps </span>
Answer
John Brown was a radical abolitionist who believed in the violent overthrow of the slavery system
Explanation: During the Bleeding Kansas conflicts, Brown and his sons led John Brown was a radical abolitionist who believed in the violent overthrow of the slavery system.
I'm no good in English but I think it's D. Indirect object.