National/Historical Provinces and Migration

[Renibuff 9]

I suggest, of course, if you will do the majority on history, then I would like countries to have the original national provinces of other countries, which is why they have an endless reason for war on them. And migration is if everything is bad in your country that people will run away from it and neighboring countries can choose to let them in or not, for example, in some reforms to do this, if accepted, the population will increase faster but neighboring provinces will become national provinces of the country from which these migrants fled.