What theory does this video presentation supports?

They wanted to arm enslaved workers using the town’s armory.

Abolitionist John Brown initiates a little group on an attack against a national magazine in Harpers Ferry, Virginia which was an effort to originate a strong slave rebellion and overcome the business of slavery. After the Civil War commenced, the Union converted more focused on completing slavery. The Emancipation Proclamation announced on January 1, 1863, cleared the laborers in the South. The North was now struggling to complete servitude as well as to defend the Union.