Question

john browns attempted rebellion of enslaved people failed, and he was captured by authorities. while in prison in december 1859, he handed a note to his guard. read the following text from that note. then complete the sentence below.
i, john brown, am now quite certain that the crimes of this guilty land will never be purged . . . except with blood.
purged: removed
complete the sentence.
brown believed that ____________ would be necessary to end slavery.
non-violent protest
violence
petitions
economic boycott

Explanation:

John Brown's note states the crimes of the land (referring to slavery) can only be "purged [removed]... with blood", which directly references violent action as the necessary means to end slavery. The other options are non-violent methods that contradict his statement.

Answer:

violence