Why did john brown attack the federal arsenal at harper's ferry in virginia?

The reason why John Brown attack the federal arsenal at harper's ferry in virginia was:  He wanted a base from which to start a slave uprising

The arsenal in harper's ferry Virginia contain a lot of weapons and amunitions that Brown can use in the uprising. The structure of the place could also be used as a defensive fortress for hiding or sustain an attack from the opposition. But eventually , the anti-abolitionists managed to defeat him and he was executed.

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frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.