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.

Among the options given on the question the correct answer is option C.

John Brown participated in raids against slavery in Harper's Ferry and Kansas.

Explanation:John Brown was a radical abolitionist. He was born in Connecticut and raised in Ohio. The anti slavery mindset grew him from the childhood. However in professional life he was a failed businessman.

In  1855 he and his sons went to Kansas and joined the struggle between proslavery  and free soil settlers, he announced himself as the capatain of anti slavery movement. He believed in the violent movement to overthrow the slavery and took violent way to prevent slavery.

According to his vision, Brown and his sons had attacked in the residence of pro slavery people in Kansas. soon he became a popular figure for anti slavery and formed a small army.

In 1859 he and his 21 followers attacked in the Harpers Ferry central arsenal in order to capture the arms and supplies.But he was caught during the raid and later hanged.

But he became a anti slavery hero in the eyes of many slaves.

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answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.