Can I go back and add Amazon capsules to hubs I've already published?

You can add Amazon capsules to any hub you choose to. You are not limited to only a specific time or format with regards to Amazon. If you have reviews of products, goods, books or anything else, then it might be a good thing to add Amazon capsules to them, because you could make extra earnings.

Enjoy!

Yes that is possible. In fact you can change everything of a hub's contents, except the URL really.

Many thanks for the answers, much appreciated.

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.