I know that Powerbox can create a new culture, but my problem with that power is the new culture completely restarts their research which puts them at a disadvantage to other kingdoms.
I want another power that effectively duplicates the culture that was there originally but is a new one.

I would want to use this for when a town revolts and wins its independence, I would like that kingdom to gain its own culture to make it more likely to revolt if it was taken over again.