Thanks for your question.
Nothing continuous – we don’t have the data.
I think it could all be done by cross-fades (correct term?) from the same map outline to the next with later features. First from the pre-developed state to a small village to a walled city… We have information about roughly 5 approximate developmental points-in-time (Hype Scenes, maybe?).
It would be useful to have some additional animation effects for illustration, as simple as adding call-outs to label a small number of specific points-of-interest. Or maybe adding (or subtracting) structures in groups.
More ambitious: we know a specific institution-of-interest was moved from point ‘a’ to point ‘b’ in a specific year. It would be helpful to animate that specific transition to put it in contrast to the slowly-changing and fuzzy longer picture.