Don't have a straight answer for you, but when the links are broken it usually means that the site where they came from is no longer active or the links were deleted. Try emailing the HP staff to see if this has happened before. As far as affecting your score, it does not.
I suspect it is because the hubber of the hub that you linked your hub to doesn't want his/her hub linked to yours. It's happened to me a few times and I think that might be it.
They definitely were not broken links I think its a hubpages issue, I'll wait for stats to refresh today and if no change I will submit a ticket thanks for your advice And Anne they are my hubs :).
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.