A reminder on the Australian UA…
Boundless Plains to Share: Settlers found Puppeted cities that generate +1 Tourism. +1 Tourism for each outgoing Naval Trade Route. Cities that generate +2 Tourism or more expand Cultural Borders twice as fast.
= more cities, more tourism pumping.
And on the Burmese one, too…
Receive (100 on Standard) Great Writer Points (GWP) when a city that Burma has never owned is conquered. Conquered cities provide +1 GWP in the Capital or the City which contains the Writer's Guild and produce +2 Culture.
They must have some writers scribbling like crazy.