Who is john brown? and what is he known for? in 1850

John Brown was a radical abolitionist who believed in the violent overthrow of the slavery system. During the Bleeding Kansas conflicts, Brown and his sons led attacks on pro-slavery residents. Justifying his actions as the will of God, Brown soon became a hero in the eyes of Northern extremists and was quick to capitalize on his growing reputation. By early 1858, he had succeeded in enlisting a small “army” of insurrectionists whose mission was to foment rebellion among the slaves. In 1859, Brown and 21 of his followers attacked and occupied the federal arsenal in Harpers Ferry. Their goal was to capture supplies and use them to arm a slave rebellion. Brown was captured during the raid and later hanged, but not before becoming an anti-slavery icon. (WARNING I DO NOT OWN THE RIGHTS TO THIS ANSWER AND I SIMPLY JUST LOOKED IT UP GO ON GOOGLE AND YOU WILL SEE I GOT THE ANSWER FROM www.history.com)

answer; taking up arms to defend the nation;

the answer is "focused on"

lol gave an answer 1 week that's the answer for those who need it in the future xd