How did john brown contribute to the abolitionist movement? a) john brown fought on the union side during the civil war. eliminate b) john brown led enslaved african americans through the underground railroad. c) john brown participated in raids against slavery in harpers ferry and kansas. d) john brown worked with harriet tubman to orchestrate the underground railroad.

The correct answer is C.

John Brown was known for his strong abolitionist views. During the era of Bleeding Kansas, he actually lead a violent revolt in which several slave owners in Kansas were killed by a group he organized.

Along with this, Brown also organized a raid on a federal arsenal (called John Brown's Raid on Harper's Ferry). His goal was to steal weapons from this arsenal in order to arm slaves for a wide scale revolution. His raid failed and eventually resulted in him being executed for his actions.