[Ladyofdragons]

I would assume the history snippet to be in your BWU topic. Then within City of Joestown you would put in the features that it is the home of BWU (which would auto-link to your history), and within the Kingdom history timeline you would say 3098, BWU Established (again the link). Or at least that would be how I would do it. Full text once, slight mention enough to get the link to it everywhere else.

I do see the allure of having the text in front of you for something simple rather than having to click-through. perhaps an "embedded snippet" type snippet, where you add it, point to the source, then it displays within the target.