How do i make a map like the one from Hearts of Iron IV

Hello, im trying to make an RTS game like Hearts of Iron IV and i need help figuring out how to make a map like this one

You can also select states and provinces separately like this

I’m not a very good scripter, but I think looking at things like ClickDetectors, cutscenes, and BillboardGuis would be a good start. It’s a pretty large undertaking for just one person so start small and experiment using tinier scale models.