Can you use articles that you've written on Hubpages for other similar sites? Or do you have to?

You can repost stuff that you have written yourself at Hubpages and elsewhere within reason. However, you will get a duplicate flag and the score will be on the low side. From the FAQ:Your Hub's content has been detected on another site and has incurred a HubScore penalty as a result.

You are allowed to post content on HubPages that is also published elsewhere, like your own site or blog—but you cannot place any promotional links on that Hub. Only you can see the alert message at the top of your Hub. A pattern of publishing duplicate content will negatively affect your HubScore, as we prefer to reward authors who publish content unique to our HubPages.It does not matter whether or not you are the original author of this content.

HP wants original material that is not published elsewhere. You can write on the subject and post it on other sites. But do change it up a bit....omitting and adding info as needed.

There is more indepth info on the tutorials, and I imagine, you could find the terms of service posted somewhere, should you need to review them.

You can't use single article to many places, like if you use 1 article in your website then you can't use the same content to hubpages, it will goes to review or flag you for violation of using duplicate content, so you have to write new and fresh content to use it at Hubpages!

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.