What was result of john browns raid on harpy ferry?

John Brown's raid on Harpers Ferry in October 1859 aimed to initiate an armed slave revolt by seizing the federal armory there. The raid was ultimately unsuccessful; Brown and his followers were quickly overwhelmed by local militia and U.S. troops led by Robert E. Lee. Brown was captured, tried for treason, and executed. The raid heightened tensions between the North and South, contributing to the onset of the Civil War.