What does Hasan Kwame Jeffries mean by "seen and unseen" when explaining the ways enslaved people resisted?

Explanation:

I think it means that when people actually stood up for slavery, if they stood up enough, they could be heard. If they did not though, then they would not be heard.?

the answer is emerged from.

orpheus descended to hades, the world of the death to rescue eurydice. no mortal had ever done this before him, he survived because he was protected by the gods. the word "underworld" gives us a clue, he emerged from it like a whale emerges form sea for exemple.

the choice that is not a technique that you should use to come up with ideas for the topic of a research project is, writing about academic subjects that are not interesting to you. this does not belong to the techniques to come up with ideas because having no interest in a certain topic will lose your drive to come up with better ideas. it gives no room for improvement and acquiring of new ideas and information. 

explanation: