I don't think it's necessary to give a credit on a YouTube video as the text box at the side of the video has the authors name in the top line. Type hylonlad into the search box of YouTube, (hylonlad is my pen name for videos) and you will see a list of all my videos. If you need to add any one of them or anyone elses video to your hubs, I understand there is nothing to stop you.It will also give the author a plug.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.