I think you probably fixed any issues you had when you changed your Yahoo account password. Any device that was signed in (yours or otherwise) will be forced to log in again with your (new) password. It'll still show up in "Recent activity" because, well, it's history and you can't change the past.
But, like I said, anyone who was on should've been kicked off, or at the very least won't be able to log back in.
Sometimes, your IP is based on the Interner Service Provider's IP or physical address so it's normal...
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.