John Brown was an abolitionist extremist who wanted to violently overthrow the slavery system. During Bleeding Kansas, he and his sons led attacks on pro-slavery citizens. He believed that his actions were a will of God, and therefore pure. ... The objective was to take supplies and arm their slave rebellion.
I do not know any of the answers since I did not read the passage, the next time you could put a link to the passage so it's better to comprehend. That's my best suggestion.
I suggest: Put some context and background knowledge <em>before</em> putting the questions themselves for people to answer. If you don't do that, then people would be coming into this blindly.
I guess there are many answers to this depending on what your teacher is passing to you! But I believe the best answer to the posed question would be that Nazi propaganda's main purposed was to intimidate, threaten and empower themselves. I believe that this age was a huge problem due to the intimidation that Nazi Germany posed to other countries.
Hope I was able to help! If you have any further questions, please let me know!